Hello all,
I've been googling my brains out since yesterday looking for up-to-date information on this matter, and have found information that is anywhere from 15 to 5 years old. I'd really like some information that much more up to date on the subject. Specifically configuring Sendmail SMTP authentication (_no smart host stuff_).
I've got Sendmail 8.14 installed on a CentOS 7.3 server. Also installed:
- Cyrus-sasl - Dovecot - Openssl
Essentially everything I need except the working knowledge for the process. If someone knows where I might locate this information it would be greatly appreciated.
thanks
Mark
On Wed, 8 Mar 2017, Mark Weaver wrote:
Hello all,
I've been googling my brains out since yesterday looking for up-to-date information on this matter, and have found information that is anywhere from 15 to 5 years old. I'd really like some information that much more up to date on the subject. Specifically configuring Sendmail SMTP authentication (_no smart host stuff_).
I wrote this article years ago:
https://www.madboa.com/geek/sendmail-auth/
The configuration outlined there is essentially unchanged today. I have it running on a CentOS 7 machine with sendmail 8.14.
The only real change is the SOCKETDIR setting in /etc/sysconfig/saslauthd, which is now /run/saslauthd (rather than /var/run/saslauthd). And, of course, I use systemctl rather than chkconfig to control boot-time behavior.
The trickier bit for me was stopping and restarting the whole SMTP toolchain, which includes spamassassin, clavav, and opendmarc. Below my .sig, I've included the shell script I use for that.
On 03/08/2017 11:00 AM, Paul Heinlein wrote:
On Wed, 8 Mar 2017, Mark Weaver wrote:
Hello all,
I've been googling my brains out since yesterday looking for up-to-date information on this matter, and have found information that is
anywhere from
15 to 5 years old. I'd really like some information that much more
up to date
on the subject. Specifically configuring Sendmail SMTP
authentication (_no
smart host stuff_).
I wrote this article years ago:
https://www.madboa.com/geek/sendmail-auth/
The configuration outlined there is essentially unchanged today. I have it running on a CentOS 7 machine with sendmail 8.14.
The only real change is the SOCKETDIR setting in /etc/sysconfig/saslauthd, which is now /run/saslauthd (rather than /var/run/saslauthd). And, of course, I use systemctl rather than chkconfig to control boot-time behavior.
The trickier bit for me was stopping and restarting the whole SMTP toolchain, which includes spamassassin, clavav, and opendmarc. Below my .sig, I've included the shell script I use for that.
-- Paul Heinlein <> heinlein@madboa.com mailto:heinlein@madboa.com <> http://www.madboa.com/
Hi Paul,
I much appreciate the info and will be having a look at it. I'll post back as to how its gone. Migrating is both enjoyable, exciting and a real BIG pain in the ass; all at the same time.
#!/bin/sh # # start/stop SMTP tool chain on mail.madboa.com
#
LANG=C PATH="/usr/bin:/usr/sbin"
function mail_start { sync && sync for S in \ "clamd@clayton mailto:clamd@clayton" "clamav-milter" \ "opendmarc" \ "spamassassin" "spamass-milter" \ "sendmail" do echo -n "Starting $S :: " systemctl start ${S}.service if test $? -eq 0; then echo "ok"; else echo "failed"; fi done }
function mail_status { for S in \ "clamd@clayton mailto:clamd@clayton" "clamav-milter" \ "opendmarc" \ "spamassassin" "spamass-milter" \ "sendmail" do echo -n "$S :: " systemctl is-active ${S}.service done }
function mail_stop { for S in \ "sendmail" \ "clamav-milter" "clamd@clayton mailto:clamd@clayton" \ "opendmarc" \ "spamass-milter" "spamassassin" do echo -n "Stopping $S :: " systemctl stop ${S}.service if test $? -eq 0; then echo "ok"; else echo "failed"; fi done }
case "$1" in start) mail_start ;; stop) mail_stop ;; restart) mail_stop mail_start ;; status) mail_status ;; *) echo "usage: $(basename $0) {start|stop|restart|status}" ;; esac
# vim: set filetype=sh:
CentOS mailing list CentOS@centos.org mailto:CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Total Control Panel Login https://antispam.avgcloud.net/login?domain=compinfosystems.com
To: mweaver@compinfosystems.com https://antispam.avgcloud.net/address-properties?aID=2556430&domain=compinfosystems.com
From: centos-bounces@centos.org
Remove https://antispam.avgcloud.net/FooterAction?ver=3&un-wl-sender-address=1&hID=1854031573&domain=compinfosystems.com this sender from my allow list
You received this message because the sender is on your allow list.
On 03/08/2017 11:00 AM, Paul Heinlein wrote:
On Wed, 8 Mar 2017, Mark Weaver wrote:
Hello all,
I've been googling my brains out since yesterday looking for up-to-date information on this matter, and have found information that is
anywhere from
15 to 5 years old. I'd really like some information that much more
up to date
on the subject. Specifically configuring Sendmail SMTP
authentication (_no
smart host stuff_).
I wrote this article years ago:
https://www.madboa.com/geek/sendmail-auth/
The configuration outlined there is essentially unchanged today. I have it running on a CentOS 7 machine with sendmail 8.14.
The only real change is the SOCKETDIR setting in /etc/sysconfig/saslauthd, which is now /run/saslauthd (rather than /var/run/saslauthd). And, of course, I use systemctl rather thachkconfig to control boot-time behavior.
The trickier bit for me was stopping and restarting the whole SMTP toolchain, which includes spamassassin, clavav, and opendmarc. Below my .sig, I've included the shell script I use for that.
-- Paul Heinlein <> heinlein@madboa.com mailto:heinlein@madboa.com <> http://www.madboa.com/
Hi Paul,
I followed your guide to the letter, however I think it seems I missed something. When I test with telnet to port 25 this is the result:
telnet merlin 25
Trying 10.10.3.6... Connected to merlin.ciss.local. Escape character is '^]'. 220 mdw1982.com ESMTP Sendmail 8.14.7/8.13.8; Wed, 8 Mar 2017 16:53:31 -0500 ehlo merlin 250-mdw1982.com Hello [10.10.3.102], pleased to meet you 250-ENHANCEDSTATUSCODES 250-PIPELINING 250-8BITMIME 250-SIZE 250-DSN 250-ETRN 250-DELIVERBY 250 HELP
auth login
504 5.3.3 AUTH mechanism login not available
thoughts?
Am 08.03.2017 um 22:57 schrieb Mark Weaver:
On 03/08/2017 11:00 AM, Paul Heinlein wrote:
On Wed, 8 Mar 2017, Mark Weaver wrote:
I wrote this article years ago:
Hi Paul,
I followed your guide to the letter, however I think it seems I missed something. When I test with telnet to port 25 this is the result:
telnet merlin 25
Trying 10.10.3.6... Connected to merlin.ciss.local. Escape character is '^]'. 220 mdw1982.com ESMTP Sendmail 8.14.7/8.13.8; Wed, 8 Mar 2017 16:53:31
That makes your mistake obvious: the .cf version is 8.13.8 - it does not match the Sendmail version 8.14.7. So you did not build the sendmail.cf from the modified sendmail.mc.
Make sure you have run "yum install sendmail-cf" so that "cd /etc/mail; make" can do what it should do.
-0500 ehlo merlin 250-mdw1982.com Hello [10.10.3.102], pleased to meet you 250-ENHANCEDSTATUSCODES 250-PIPELINING 250-8BITMIME 250-SIZE 250-DSN 250-ETRN 250-DELIVERBY 250 HELP
auth login
504 5.3.3 AUTH mechanism login not available
thoughts?
Alexander
On 03/08/2017 06:21 PM, Alexander Dalloz wrote:
Am 08.03.2017 um 22:57 schrieb Mark Weaver:
On 03/08/2017 11:00 AM, Paul Heinlein wrote:
On Wed, 8 Mar 2017, Mark Weaver wrote:
I wrote this article years ago:
Hi Paul,
I followed your guide to the letter, however I think it seems I missed something. When I test with telnet to port 25 this is the result:
telnet merlin 25
Trying 10.10.3.6... Connected to merlin.ciss.local. Escape character is '^]'. 220 mdw1982.com ESMTP Sendmail 8.14.7/8.13.8; Wed, 8 Mar 2017 16:53:31
That makes your mistake obvious: the .cf version is 8.13.8 - it does not match the Sendmail version 8.14.7. So you did not build the sendmail.cf from the modified sendmail.mc.
Make sure you have run "yum install sendmail-cf" so that "cd /etc/mail; make" can do what it should do.
-0500 ehlo merlin 250-mdw1982.com Hello [10.10.3.102], pleased to meet you 250-ENHANCEDSTATUSCODES 250-PIPELINING 250-8BITMIME 250-SIZE 250-DSN 250-ETRN 250-DELIVERBY 250 HELP
auth login
504 5.3.3 AUTH mechanism login not available
thoughts?
Alexander
And now?
telnet merlin 25
Trying 10.10.3.6... Connected to merlin.ciss.local. Escape character is '^]'. 220 mdw1982.com ESMTP Sendmail 8.14.7/8.14.7; Wed, 8 Mar 2017 18:39:51 -0500 ehlo merlin 250-mdw1982.com Hello [10.10.3.102], pleased to meet you 250-ENHANCEDSTATUSCODES 250-PIPELINING 250-8BITMIME 250-SIZE 250-DSN 250-ETRN 250-DELIVERBY 250 HELP
auth login
504 5.3.3 AUTH mechanism login not available
Am 2017-03-09 00:41, schrieb Mark Weaver:
[ ... ]
And now?
telnet merlin 25
Trying 10.10.3.6... Connected to merlin.ciss.local. Escape character is '^]'. 220 mdw1982.com ESMTP Sendmail 8.14.7/8.14.7; Wed, 8 Mar 2017 18:39:51 -0500 ehlo merlin 250-mdw1982.com Hello [10.10.3.102], pleased to meet you 250-ENHANCEDSTATUSCODES 250-PIPELINING 250-8BITMIME 250-SIZE 250-DSN 250-ETRN 250-DELIVERBY 250 HELP
auth login
504 5.3.3 AUTH mechanism login not available
Mark,
which cyrus-sasl packages did you install?
What's your precise Sendmail configuration in sendmail.mc? Please provide too your /etc/sasl2/Sendmail.conf as well your saslauthd configuration if you make use of it.
Alexander
P.S. This is a mailing list, so please strip your replies as it is not necessary to quote a hole previous mail. Just keep the context to which your reply. Thanks.
On Wed, 8 Mar 2017, Mark Weaver wrote:
On 03/08/2017 11:00 AM, Paul Heinlein wrote:
On Wed, 8 Mar 2017, Mark Weaver wrote:
Hello all,
I've been googling my brains out since yesterday looking for up-to-date information on this matter, and have found information that is anywhere from 15 to 5 years old. I'd really like some information that much more up to date on the subject. Specifically configuring Sendmail SMTP authentication (_no smart host stuff_).
I wrote this article years ago:
https://www.madboa.com/geek/sendmail-auth/
The configuration outlined there is essentially unchanged today. I have it running on a CentOS 7 machine with sendmail 8.14.
The only real change is the SOCKETDIR setting in /etc/sysconfig/saslauthd, which is now /run/saslauthd (rather than /var/run/saslauthd). And, of course, I use systemctl rather thachkconfig to control boot-time behavior.
Hi Paul,
I followed your guide to the letter, however I think it seems I missed something. When I test with telnet to port 25 this is the result:
telnet merlin 25
Trying 10.10.3.6... Connected to merlin.ciss.local. Escape character is '^]'. 220 mdw1982.com ESMTP Sendmail 8.14.7/8.13.8; Wed, 8 Mar 2017 16:53:31 -0500 ehlo merlin 250-mdw1982.com Hello [10.10.3.102], pleased to meet you 250-ENHANCEDSTATUSCODES 250-PIPELINING 250-8BITMIME 250-SIZE 250-DSN 250-ETRN 250-DELIVERBY 250 HELP
auth login
504 5.3.3 AUTH mechanism login not available
thoughts?
Many. :-)
Check your mail log for clues.
Ensure you have a valid SSL certificate and key. Sendmail is touchy about permissions on the key file. Try googling for confDONT_BLAME_SENDMAIL and GroupReadableKeyFile.
Make sure saslauthd is configured and running.
Compile your .mc (m4) file with the macros distributed with the version of sendmail you're actually running. This line suggests you're not:
mdw1982.com ESMTP Sendmail 8.14.7/8.13.8
That's a first stab at things to try.
On 03/08/2017 06:42 PM, Paul Heinlein wrote:
On Wed, 8 Mar 2017, Mark Weaver wrote:
On 03/08/2017 11:00 AM, Paul Heinlein wrote:
On Wed, 8 Mar 2017, Mark Weaver wrote:
Hello all,
I've been googling my brains out since yesterday looking for up-to-date information on this matter, and have found information that is anywhere from 15 to 5 years old. I'd really like some information that much more up to date on the subject. Specifically configuring Sendmail SMTP authentication (_no smart host stuff_).
I wrote this article years ago:
https://www.madboa.com/geek/sendmail-auth/
The configuration outlined there is essentially unchanged today. I have it running on a CentOS 7 machine with sendmail 8.14.
The only real change is the SOCKETDIR setting in /etc/sysconfig/saslauthd, which is now /run/saslauthd (rather than /var/run/saslauthd). And, of course, I use systemctl rather thachkconfig to control boot-time behavior.
Hi Paul,
I followed your guide to the letter, however I think it seems I missed something. When I test with telnet to port 25 this is the result:
telnet merlin 25
Trying 10.10.3.6... Connected to merlin.ciss.local. Escape character is '^]'. 220 mdw1982.com ESMTP Sendmail 8.14.7/8.13.8; Wed, 8 Mar 2017
16:53:31 -0500
ehlo merlin 250-mdw1982.com Hello [10.10.3.102], pleased to meet you 250-ENHANCEDSTATUSCODES 250-PIPELINING 250-8BITMIME 250-SIZE 250-DSN 250-ETRN 250-DELIVERBY 250 HELP
auth login
504 5.3.3 AUTH mechanism login not available
thoughts?
Many. :-)
Check your mail log for clues.
Ensure you have a valid SSL certificate and key. Sendmail is touchy about permissions on the key file. Try googling for confDONT_BLAME_SENDMAIL and GroupReadableKeyFile.
Make sure saslauthd is configured and running.
Compile your .mc (m4) file with the macros distributed with the version of sendmail you're actually running. This line suggests you're not:
mdw1982.com ESMTP Sendmail 8.14.7/8.13.8
That's a first stab at things to try.
I fixed the version mis-match by installing sendmail-cf package and recompiling sendmail.mc. saslauthd is running and conigured according to your specs. So, I'm not sure what's missing.
On 03/08/2017 07:09 PM, Mark Weaver wrote:
On 03/08/2017 06:42 PM, Paul Heinlein wrote:
On Wed, 8 Mar 2017, Mark Weaver wrote:
On 03/08/2017 11:00 AM, Paul Heinlein wrote:
On Wed, 8 Mar 2017, Mark Weaver wrote:
Hello all,
I've been googling my brains out since yesterday looking for up-to-date information on this matter, and have found information that is anywhere from 15 to 5 years old. I'd really like some information that much more up to date on the subject. Specifically configuring Sendmail SMTP authentication (_no smart host stuff_).
I wrote this article years ago:
https://www.madboa.com/geek/sendmail-auth/
The configuration outlined there is essentially unchanged today. I have it running on a CentOS 7 machine with sendmail 8.14.
The only real change is the SOCKETDIR setting in /etc/sysconfig/saslauthd, which is now /run/saslauthd (rather than /var/run/saslauthd). And, of course, I use systemctl rather thachkconfig to control boot-time behavior.
Hi Paul,
I followed your guide to the letter, however I think it seems I missed something. When I test with telnet to port 25 this is the result:
telnet merlin 25
Trying 10.10.3.6... Connected to merlin.ciss.local. Escape character is '^]'. 220 mdw1982.com ESMTP Sendmail 8.14.7/8.13.8; Wed, 8 Mar 2017
16:53:31 -0500
ehlo merlin 250-mdw1982.com Hello [10.10.3.102], pleased to meet you 250-ENHANCEDSTATUSCODES 250-PIPELINING 250-8BITMIME 250-SIZE 250-DSN 250-ETRN 250-DELIVERBY 250 HELP
auth login
504 5.3.3 AUTH mechanism login not available
thoughts?
Many. :-)
Check your mail log for clues.
Ensure you have a valid SSL certificate and key. Sendmail is touchy about permissions on the key file. Try googling for confDONT_BLAME_SENDMAIL and GroupReadableKeyFile.
Make sure saslauthd is configured and running.
Compile your .mc (m4) file with the macros distributed with the version of sendmail you're actually running. This line suggests you're not:
mdw1982.com ESMTP Sendmail 8.14.7/8.13.8
That's a first stab at things to try.
I fixed the version mis-match by installing sendmail-cf package and recompiling sendmail.mc. saslauthd is running and conigured according to your specs. So, I'm not sure what's missing.
Still googling around and found some things that appear to be missing from the sendmail config, but when I test saslauthd it doesn't appear to be working.
testsaslauthd -u username -p mypassword 0: NO "authentication failed"
Am 2017-03-09 02:20, schrieb Mark Weaver:
[ ... ]
Still googling around and found some things that appear to be missing from the sendmail config, but when I test saslauthd it doesn't appear to be working.
testsaslauthd -u username -p mypassword 0: NO "authentication failed"
How is your saslauthd configured? Which backend does it use? For debugging purposes it is helpful not to start saslauthd as a service but to run it with parameter -d to see its output on stdout.
Alexander
Am 2017-03-09 13:39, schrieb Alexander Dalloz:
Am 2017-03-09 02:20, schrieb Mark Weaver:
[ ... ]
Still googling around and found some things that appear to be missing from the sendmail config, but when I test saslauthd it doesn't appear to be working.
testsaslauthd -u username -p mypassword 0: NO "authentication failed"
How is your saslauthd configured? Which backend does it use? For debugging purposes it is helpful not to start saslauthd as a service but to run it with parameter -d to see its output on stdout.
Alexander
Btw. the cyrus-sasl man pages are nicely published here:
https://sys4.de/de/blog/tags/cyrus%20sasl/
Alexander
On Wed, 8 Mar 2017, Mark Weaver wrote:
On 03/08/2017 07:09 PM, Mark Weaver wrote:
I followed your guide to the letter, however I think it seems I missed something. When I test with telnet to port 25 this is the result:
telnet merlin 25
Trying 10.10.3.6... Connected to merlin.ciss.local. Escape character is '^]'. 220 mdw1982.com ESMTP Sendmail 8.14.7/8.13.8; Wed, 8 Mar 2017
16:53:31 -0500
ehlo merlin 250-mdw1982.com Hello [10.10.3.102], pleased to meet you 250-ENHANCEDSTATUSCODES 250-PIPELINING 250-8BITMIME 250-SIZE 250-DSN 250-ETRN 250-DELIVERBY 250 HELP
auth login
504 5.3.3 AUTH mechanism login not available
thoughts?
Many. :-)
Check your mail log for clues.
Ensure you have a valid SSL certificate and key. Sendmail is touchy about permissions on the key file. Try googling for confDONT_BLAME_SENDMAIL and GroupReadableKeyFile.
Make sure saslauthd is configured and running.
Compile your .mc (m4) file with the macros distributed with the version of sendmail you're actually running. This line suggests you're not:
mdw1982.com ESMTP Sendmail 8.14.7/8.13.8
That's a first stab at things to try.
I fixed the version mis-match by installing sendmail-cf package and recompiling sendmail.mc. saslauthd is running and conigured according to your specs. So, I'm not sure what's missing.
Still googling around and found some things that appear to be missing from the sendmail config, but when I test saslauthd it doesn't appear to be working.
testsaslauthd -u username -p mypassword 0: NO "authentication failed"
Usually, testsaslauthd needs a service name. In this case,
testsaslauthd -u username -p mypassword -s smtp
If your password has any characters a shell might misinterpret (*, !, <, >, &, ...), make sure you enclose it in quotation marks.
What have you seen in your logs (usually /var/log/maillog on CentOS systems)? If sendmail is having trouble setting up TLS/SSL, it will let you know!
You may have to post the entire contents of your sendmail.mc (the m4 file), redacted as necessary to obscure any non-relevant bits that may be sensitive.
On 03/09/2017 10:58 AM, Paul Heinlein wrote:
Usually, testsaslauthd needs a service name. In this case,
testsaslauthd -u username -p mypassword -s smtp
If your password has any characters a shell might misinterpret (*, !, <, >, &, ...), make sure you enclose it in quotation marks.
What have you seen in your logs (usually /var/log/maillog on CentOS systems)? If sendmail is having trouble setting up TLS/SSL, it will let you know!
You may have to post the entire contents of your sendmail.mc (the m4 file), redacted as necessary to obscure any non-relevant bits that may be sensitive.
Alexander... Paul,
My apologies for taking so long to reply. I did get everything worked out and if I'm honest I had to go through all the crap I went through to get everything work; including TLS. Working with MS Exchange and other MS server environment products, not to mention all the other things included in that, have made my linux skills rather rusty.
Now that I've done it and actually understand what's going on I can't believe how blasted easy it really is and feel a little foolish; mostly for allowing my Linux skills to get rusty to begin with. Hell! my CentOS 5 server simply runs, doesn't complain, doesn't break down or choke and puke on updates. (thats one of the reasons I use to justify my skills getting rusty. ;P )
But, thank you gentlemen for your assistance. It is appreciated.
Now... one last question: Is it better to use self-signed certs for Sendmail, or is it better to get CA Authority signed certs for sendmail? I get all my web server certs from Go Daddy, but from what I've read so far Sendmail seems to experience issues with CA Authority signed certs that contain a common name and I /believe/ certs from places like Go Daddy require the common name field no be empty.
thanks in advance...
On 03/08/2017 10:41 AM, Mark Weaver wrote:
Hello all,
I've been googling my brains out since yesterday looking for up-to-date information on this matter, and have found information that is anywhere from 15 to 5 years old. I'd really like some information that much more up to date on the subject. Specifically configuring Sendmail SMTP authentication (_no smart host stuff_).
I've got Sendmail 8.14 installed on a CentOS 7.3 server. Also installed:
- Cyrus-sasl
- Dovecot
- Openssl
Essentially everything I need except the working knowledge for the process. If someone knows where I might locate this information it would be greatly appreciated.
Do you need Cyrus-sasl anymore? Dovecot now comes with its own sasl.
I am working up a C7-Postfix/MYsql/Postfixadmin/Dovecot/Roundcube/Amavis-clamav howto.
So, sorry, I switched from Sendmail to Postfix some 6+ years ago.
I am actually doing this on Centos7-amrv7hl, but it will work on all C7 arches. It will take me a couple more weeks to finish, but will share with anyone that wants it now or more wants to help.
On 03/08/2017 11:40 AM, Robert Moskowitz wrote:
On 03/08/2017 10:41 AM, Mark Weaver wrote:
Hello all,
I've been googling my brains out since yesterday looking for up-to-date information on this matter, and have found information that is anywhere from 15 to 5 years old. I'd really like some information that much more up to date on the subject. Specifically configuring Sendmail SMTP authentication (_no smart host stuff_).
I've got Sendmail 8.14 installed on a CentOS 7.3 server. Also installed:
- Cyrus-sasl
- Dovecot
- Openssl
Essentially everything I need except the working knowledge for the process. If someone knows where I might locate this information it would be greatly appreciated.
Do you need Cyrus-sasl anymore? Dovecot now comes with its own sasl.
I am working up a C7-Postfix/MYsql/Postfixadmin/Dovecot/Roundcube/Amavis-clamav howto.
So, sorry, I switched from Sendmail to Postfix some 6+ years ago.
I am actually doing this on Centos7-amrv7hl, but it will work on all C7 arches. It will take me a couple more weeks to finish, but will share with anyone that wants it now or more wants to help.
I thought about Postfix for a few minutes and decided because of the amount of other stuff I've got on my plate since I'm already familiar with Sendmail I decided to stay with it. But thank you.
Try this article, "Outbound authentication for Sendmail."
http://www.databook.bz/?page_id=3097
I wrote this after setting it up on my own CentOS server.
On 03/08/2017 10:41 AM, Mark Weaver wrote:
Hello all,
I've been googling my brains out since yesterday looking for up-to-date information on this matter, and have found information that is anywhere from 15 to 5 years old. I'd really like some information that much more up to date on the subject. Specifically configuring Sendmail SMTP authentication (_no smart host stuff_).
I've got Sendmail 8.14 installed on a CentOS 7.3 server. Also installed:
- Cyrus-sasl
- Dovecot
- Openssl
Essentially everything I need except the working knowledge for the process. If someone knows where I might locate this information it would be greatly appreciated.
thanks
Mark
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
On 03/08/2017 12:34 PM, David Both wrote:
Try this article, "Outbound authentication for Sendmail."
http://www.databook.bz/?page_id=3097
I wrote this after setting it up on my own CentOS server.
Will definitely be having a look at this. The information is much appreciated.
On 03/08/2017 10:41 AM, Mark Weaver wrote:
Hello all,
I've been googling my brains out since yesterday looking for up-to-date information on this matter, and have found information that is anywhere from 15 to 5 years old. I'd really like some information that much more up to date on the subject. Specifically configuring Sendmail SMTP authentication (_no smart host stuff_).
I've got Sendmail 8.14 installed on a CentOS 7.3 server. Also installed:
- Cyrus-sasl
- Dovecot
- Openssl
Essentially everything I need except the working knowledge for the process. If someone knows where I might locate this information it would be greatly appreciated.
thanks
Mark
CentOS mailing list CentOS@centos.org mailto:CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
--
David P. Both
"I'd put my money on the sun and solar energy. What a source of power! I hope we don't have to wait until oil and coal run out before we tackle that."
- Thomas Edison, in conversation with Henry Ford and
Harvey Firestone, 1931
--
David P. Both, RHCE Millennium Technology Consulting LLC Raleigh, NC, USA 919-389-8678
dboth@millennium-technology.com mailto:dboth@millennium-technology.com
www.millennium-technology.com www.databook.bz - Home of the DataBook for Linux DataBook is a Registered Trademark of David Both
This communication may be unlawfully collected and stored by the National Security Agency (NSA) in secret. The parties to this email do not consent to the retrieving or storing of this communication and any related metadata, as well as printing, copying, re-transmitting, disseminating, or otherwise using it. If you believe you have received this communication in error, please delete it immediately.
CentOS mailing list CentOS@centos.org mailto:CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
Total Control Panel Login https://antispam.avgcloud.net/login?domain=compinfosystems.com
To: mweaver@compinfosystems.com https://antispam.avgcloud.net/address-properties?aID=2556430&domain=compinfosystems.com
From: centos-bounces@centos.org
Remove https://antispam.avgcloud.net/FooterAction?ver=3&un-wl-sender-address=1&hID=1854216242&domain=compinfosystems.com this sender from my allow list
You received this message because the sender is on your allow list.
-
Alexander Dalloz -
David Both -
Mark Weaver -
Paul Heinlein -
Robert Moskowitz