All;
I installed sendmail via yum, but if I test it like this:
echo "Subject: sendmail test" | sendmail sbob@quadratum-braccas.com
I get a local mail on the server with this every time:
Message 1: From MAILER-DAEMON@kdb-bugs.example.com Sun Apr 19 10:15:00 2020 Return-Path: MAILER-DAEMON@kdb-bugs.example.com Date: Sun, 19 Apr 2020 10:15:00 -0600 From: Mail Delivery Subsystem MAILER-DAEMON@kdb-bugs.example.com To: root@kdb-bugs.example.com Content-Type: multipart/report; report-type=delivery-status; boundary="03JGF0ni013558.1587312900/kdb-bugs.example.com" Subject: Returned mail: see transcript for details Auto-Submitted: auto-generated (failure) Status: R
Part 1:
The original message was received at Sun, 19 Apr 2020 10:02:56 -0600 from localhost [127.0.0.1]
----- The following addresses had permanent fatal errors ----- sbob@quadratum-braccas.com (reason: 554 5.7.1 Service unavailable; Client host [50.243.150.81] blocked using xbl.spamhaus.org.rbl.local; https://www.spamhaus .org/query/ip/50.243.150.81)
----- Transcript of session follows ----- ... while talking to in1-smtp.messagingengine.com.:
RCPT To:sbob@quadratum-braccas.com
<<< 554 5.7.1 Service unavailable; Client host [50.243.150.81] blocked using xbl.spamhaus.org.rbl.local; https://www.spamhaus.org/quer y/ip/50.243.150.81 554 5.0.0 Service unavailable
DATA
<<< 421 4.4.2 mx5.messagingengine.com Error: timeout exceeded ... while talking to in2-smtp.messagingengine.com.:
DATA
<<< 421 4.4.2 wmx2.messagingengine.com Error: timeout exceeded
Thanks in advance
If it helps, here is my sendmail.mc file:
[root@kdb-bugs ~]# cat /etc/mail/sendmail.mc divert(-1)dnl dnl # dnl # This is the sendmail macro config file for m4. If you make changes to dnl # /etc/mail/sendmail.mc, you will need to regenerate the dnl # /etc/mail/sendmail.cf file by confirming that the sendmail-cf package is dnl # installed and then performing a dnl # dnl # /etc/mail/make dnl # include(`/usr/share/sendmail-cf/m4/cf.m4')dnl VERSIONID(`setup for linux')dnl OSTYPE(`linux')dnl dnl # dnl # Do not advertize sendmail version. dnl # dnl define(`confSMTP_LOGIN_MSG', `$j Sendmail; $b')dnl dnl # dnl # default logging level is 9, you might want to set it higher to dnl # debug the configuration dnl # dnl define(`confLOG_LEVEL', `9')dnl dnl # dnl # Uncomment and edit the following line if your outgoing mail needs to dnl # be sent out through an external mail server: dnl # dnl define(`SMART_HOST', `smtp.your.provider')dnl dnl # define(`confDEF_USER_ID', ``8:12'')dnl dnl define(`confAUTO_REBUILD')dnl define(`confTO_CONNECT', `1m')dnl define(`confTRY_NULL_MX_LIST', `True')dnl define(`confDONT_PROBE_INTERFACES', `True')dnl define(`PROCMAIL_MAILER_PATH', `/usr/bin/procmail')dnl define(`ALIAS_FILE', `/etc/aliases')dnl define(`STATUS_FILE', `/var/log/mail/statistics')dnl define(`UUCP_MAILER_MAX', `2000000')dnl define(`confUSERDB_SPEC', `/etc/mail/userdb.db')dnl define(`confPRIVACY_FLAGS', `authwarnings,novrfy,noexpn,restrictqrun')dnl define(`confAUTH_OPTIONS', `A')dnl dnl # dnl # The following allows relaying if the user authenticates, and disallows dnl # plaintext authentication (PLAIN/LOGIN) on non-TLS links dnl # dnl define(`confAUTH_OPTIONS', `A p')dnl dnl # dnl # PLAIN is the preferred plaintext authentication method and used by dnl # Mozilla Mail and Evolution, though Outlook Express and other MUAs do dnl # use LOGIN. Other mechanisms should be used if the connection is not dnl # guaranteed secure. dnl # Please remember that saslauthd needs to be running for AUTH. dnl # dnl TRUST_AUTH_MECH(`EXTERNAL DIGEST-MD5 CRAM-MD5 LOGIN PLAIN')dnl dnl define(`confAUTH_MECHANISMS', `EXTERNAL GSSAPI DIGEST-MD5 CRAM-MD5 LOGIN PLAIN')dnl dnl # dnl # Rudimentary information on creating certificates for sendmail TLS: dnl # cd /etc/pki/tls/certs; make sendmail.pem dnl # Complete usage: dnl # make -C /etc/pki/tls/certs usage dnl # dnl define(`confCACERT_PATH', `/etc/pki/tls/certs')dnl dnl define(`confCACERT', `/etc/pki/tls/certs/ca-bundle.crt')dnl dnl define(`confSERVER_CERT', `/etc/pki/tls/certs/sendmail.pem')dnl dnl define(`confSERVER_KEY', `/etc/pki/tls/certs/sendmail.pem')dnl dnl # dnl # This allows sendmail to use a keyfile that is shared with OpenLDAP's dnl # slapd, which requires the file to be readble by group ldap dnl # dnl define(`confDONT_BLAME_SENDMAIL', `groupreadablekeyfile')dnl dnl # dnl define(`confTO_QUEUEWARN', `4h')dnl dnl define(`confTO_QUEUERETURN', `5d')dnl dnl define(`confQUEUE_LA', `12')dnl dnl define(`confREFUSE_LA', `18')dnl define(`confTO_IDENT', `0')dnl dnl # If you're operating in a DSCP/RFC-4594 environment with QoS dnl define(`confINET_QOS', `AF11')dnl dnl FEATURE(delay_checks)dnl FEATURE(`no_default_msa', `dnl')dnl FEATURE(`smrsh', `/usr/sbin/smrsh')dnl FEATURE(`mailertable', `hash -o /etc/mail/mailertable.db')dnl FEATURE(`virtusertable', `hash -o /etc/mail/virtusertable.db')dnl FEATURE(redirect)dnl FEATURE(always_add_domain)dnl FEATURE(use_cw_file)dnl FEATURE(use_ct_file)dnl dnl # dnl # The following limits the number of processes sendmail can fork to accept dnl # incoming messages or process its message queues to 20.) sendmail refuses dnl # to accept connections once it has reached its quota of child processes. dnl # dnl define(`confMAX_DAEMON_CHILDREN', `20')dnl dnl # dnl # Limits the number of new connections per second. This caps the overhead dnl # incurred due to forking new sendmail processes. May be useful against dnl # DoS attacks or barrages of spam. (As mentioned below, a per-IP address dnl # limit would be useful but is not available as an option at this writing.) dnl # dnl define(`confCONNECTION_RATE_THROTTLE', `3')dnl dnl # dnl # The -t option will retry delivery if e.g. the user runs over his quota. dnl # FEATURE(local_procmail, `', `procmail -t -Y -a $h -d $u')dnl FEATURE(`access_db', `hash -T<TMPF> -o /etc/mail/access.db')dnl FEATURE(`blacklist_recipients')dnl EXPOSED_USER(`root')dnl dnl # dnl # For using Cyrus-IMAPd as POP3/IMAP server through LMTP delivery uncomment dnl # the following 2 definitions and activate below in the MAILER section the dnl # cyrusv2 mailer. dnl # dnl define(`confLOCAL_MAILER', `cyrusv2')dnl dnl define(`CYRUSV2_MAILER_ARGS', `FILE /var/lib/imap/socket/lmtp')dnl dnl # dnl # The following causes sendmail to only listen on the IPv4 loopback address dnl # 127.0.0.1 and not on any other network devices. Remove the loopback dnl # address restriction to accept email from the internet or intranet. dnl # DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl dnl # dnl # The following causes sendmail to additionally listen to port 587 for dnl # mail from MUAs that authenticate. Roaming users who can't reach their dnl # preferred sendmail daemon due to port 25 being blocked or redirected find dnl # this useful. dnl # dnl DAEMON_OPTIONS(`Port=submission, Name=MSA, M=Ea')dnl dnl # dnl # The following causes sendmail to additionally listen to port 465, but dnl # starting immediately in TLS mode upon connecting. Port 25 or 587 followed dnl # by STARTTLS is preferred, but roaming clients using Outlook Express can't dnl # do STARTTLS on ports other than 25. Mozilla Mail can ONLY use STARTTLS dnl # and doesn't support the deprecated smtps; Evolution <1.1.1 uses smtps dnl # when SSL is enabled-- STARTTLS support is available in version 1.1.1. dnl # dnl # For this to work your OpenSSL certificates must be configured. dnl # dnl DAEMON_OPTIONS(`Port=smtps, Name=TLSMTA, M=s')dnl dnl # dnl # The following causes sendmail to additionally listen on the IPv6 loopback dnl # device. Remove the loopback address restriction listen to the network. dnl # dnl DAEMON_OPTIONS(`port=smtp,Addr=::1, Name=MTA-v6, Family=inet6')dnl dnl # dnl # enable both ipv6 and ipv4 in sendmail: dnl # dnl DAEMON_OPTIONS(`Name=MTA-v4, Family=inet, Name=MTA-v6, Family=inet6') dnl # dnl # We strongly recommend not accepting unresolvable domains if you want to dnl # protect yourself from spam. However, the laptop and users on computers dnl # that do not have 24x7 DNS do need this. dnl # FEATURE(`accept_unresolvable_domains')dnl dnl # dnl FEATURE(`relay_based_on_MX')dnl dnl # dnl # Also accept email sent to "localhost.localdomain" as local email. dnl # LOCAL_DOMAIN(`localhost.localdomain')dnl dnl # dnl # The following example makes mail from this host and any additional dnl # specified domains appear to be sent from mydomain.com dnl # dnl MASQUERADE_AS(`mydomain.com')dnl dnl # dnl # masquerade not just the headers, but the envelope as well dnl # dnl FEATURE(masquerade_envelope)dnl dnl # dnl # masquerade not just @mydomainalias.com, but @*.mydomainalias.com as well dnl # dnl FEATURE(masquerade_entire_domain)dnl dnl # dnl MASQUERADE_DOMAIN(localhost)dnl dnl MASQUERADE_DOMAIN(localhost.localdomain)dnl dnl MASQUERADE_DOMAIN(mydomainalias.com)dnl dnl MASQUERADE_DOMAIN(mydomain.lan)dnl MAILER(smtp)dnl MAILER(procmail)dnl dnl MAILER(cyrusv2)dnl
On 4/19/20 12:28 PM, S.Bob wrote:
All;
I installed sendmail via yum, but if I test it like this:
The original message was received at Sun, 19 Apr 2020 10:02:56 -0600 from localhost [127.0.0.1]
----- The following addresses had permanent fatal errors ----- sbob@quadratum-braccas.com (reason: 554 5.7.1 Service unavailable; Client host [50.243.150.81] blocked using xbl.spamhaus.org.rbl.local; https://www.spamhaus .org/query/ip/50.243.150.81)
Is 50.243.150.81 your system's IP address? If so, as this shows, that IP is on spamhaus' blacklist of addresses. Thus, your sendmail is working fine. Problem is elsewhere.
On 4/19/20 10:36 AM, Tim Evans wrote:
On 4/19/20 12:28 PM, S.Bob wrote:
All;
I installed sendmail via yum, but if I test it like this:
The original message was received at Sun, 19 Apr 2020 10:02:56 -0600 from localhost [127.0.0.1]
----- The following addresses had permanent fatal errors ----- sbob@quadratum-braccas.com (reason: 554 5.7.1 Service unavailable; Client host [50.243.150.81] blocked using xbl.spamhaus.org.rbl.local; https://www.spamhaus .org/query/ip/50.243.150.81)
Is 50.243.150.81 your system's IP address? If so, as this shows, that IP is on spamhaus' blacklist of addresses. Thus, your sendmail is working fine. Problem is elsewhere.
anything I can do to fix it?
On 4/19/20 12:38 PM, S.Bob wrote:
On 4/19/20 10:36 AM, Tim Evans wrote:
On 4/19/20 12:28 PM, S.Bob wrote:
All;
I installed sendmail via yum, but if I test it like this:
The original message was received at Sun, 19 Apr 2020 10:02:56 -0600 from localhost [127.0.0.1]
----- The following addresses had permanent fatal errors ----- sbob@quadratum-braccas.com (reason: 554 5.7.1 Service unavailable; Client host [50.243.150.81] blocked using xbl.spamhaus.org.rbl.local; https://www.spamhaus .org/query/ip/50.243.150.81)
Is 50.243.150.81 your system's IP address? If so, as this shows, that IP is on spamhaus' blacklist of addresses. Thus, your sendmail is working fine. Problem is elsewhere.
anything I can do to fix it?
Assuming this is your IP address, visit https://www.spamhaus.org/lookup/ and request that it be removed from the blacklisted IP's.
However, looking at the headers from your message, it appears Comcast may be your ISP, and this 50.243.150.81 IP address appears to be a Comcast address, so you may need to contact Comcast tech support for help in getting the blacklist designation removed.
On Sun, 19 Apr 2020 10:28:54 -0600 S.Bob wrote:
sbob@quadratum-braccas.com (reason: 554 5.7.1 Service unavailable; Client host [50.243.150.81] blocked using xbl.spamhaus.org.rbl.local; https://www.spamhaus .org/query/ip/50.243.150.81)
Your ip address (50.243.150.81) is being blocked by the email server that you're sending the message to (quadratum-braccas.com). It's nothing to do with sendmail or your own email setup; the folks on the other end don't want to receive your email so they are rejecting it.
Am 19.04.2020 um 18:28 schrieb S.Bob:
I installed sendmail via yum, but if I test it like this:
echo "Subject: sendmail test" | sendmail sbob@quadratum-braccas.com
I get a local mail on the server with this every time:
[ ... ]
Hi,
your provided sendmail.mc shows that you have done zero customization. So please let me ask: do you have experience to setup and operate an MTA and especially Sendmail?
I am asking because that's not trivial and as you cannot judge about the error you are getting implies that you lack essential information. It is ok not to know how to run an MTA, but then you shouldn't.
At least you should configure Sendmail as a null-client. Do as Jason wrote and configure the SMART_HOST of your ISP. Take care for proper `' as those appear wrong in Jason's post. And make sure that the sendmail-cf package is installed so that the sendmail.cf can be rebuild after sendmail.mc customizations.
Alexander
I have almost zero experience with sendmail.
I'd be willing to pay someone to set this up for me, interested? KNow of someone?
On 4/19/20 12:18 PM, Alexander Dalloz wrote:
Am 19.04.2020 um 18:28 schrieb S.Bob:
I installed sendmail via yum, but if I test it like this:
echo "Subject: sendmail test" | sendmail sbob@quadratum-braccas.com
I get a local mail on the server with this every time:
[ ... ]
Hi,
your provided sendmail.mc shows that you have done zero customization. So please let me ask: do you have experience to setup and operate an MTA and especially Sendmail?
I am asking because that's not trivial and as you cannot judge about the error you are getting implies that you lack essential information. It is ok not to know how to run an MTA, but then you shouldn't.
At least you should configure Sendmail as a null-client. Do as Jason wrote and configure the SMART_HOST of your ISP. Take care for proper `' as those appear wrong in Jason's post. And make sure that the sendmail-cf package is installed so that the sendmail.cf can be rebuild after sendmail.mc customizations.
Alexander
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
-----Original Message----- From: S.Bob Sent: Sunday, April 19, 2020 2:27 PM
I have almost zero experience with sendmail.
I know why I use sendmail, why are you not using postfix? Hint: I would switch if I could.
I'd be willing to pay someone to set this up for me, interested? KNow of someone?
Did you follow instructions in the other email?
On 4/19/20 12:18 PM, Alexander Dalloz wrote:
Am 19.04.2020 um 18:28 schrieb S.Bob:
I installed sendmail via yum, but if I test it like this:
echo "Subject: sendmail test" | sendmail sbob@quadratum-braccas.com
I get a local mail on the server with this every time:
[ ... ]
Hi,
your provided sendmail.mc shows that you have done zero customization. So please let me ask: do you have experience to setup and operate an MTA and especially Sendmail?
I am asking because that's not trivial and as you cannot judge about the error you are getting implies that you lack essential information. It is ok not to know how to run an MTA, but then you shouldn't.
At least you should configure Sendmail as a null-client. Do as Jason wrote and configure the SMART_HOST of your ISP. Take care for proper `' as those appear wrong in Jason's post. And make sure that the sendmail-cf package is installed so that the sendmail.cf can be rebuild after sendmail.mc customizations.
Alexander
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
-- `When you say "I wrote a program that crashed Windows", people just stare at you blankly and say "Hey, I got those with the system, *for free*".' (By Linus Torvalds)
CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
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Alexander Dalloz -
Frank Cox -
Jason Pyeron -
S.Bob -
Tim Evans