See other thread/reply. > -----Original Message----- > From: CentOS <centos-bounces at centos.org> On Behalf Of S.Bob > Sent: Sunday, April 19, 2020 3:11 PM > To: centos at centos.org > Subject: Re: [CentOS] [Off topic] sending mail from Comcast was: Sendmail not working > > OK, I've fired up a new VM, new CentOS 7 install, now I get this: > > # rpm -qf `which sendmail` > postfix-2.10.1-7.el7.x86_64 > > > > Can you point me to how to set this up properly? Note that I won the > psalm19pix.com domain, it's hosted at fastmail.com, and as far as I know > requires SSL. Can I setup sendmail to use this as it's SMPT connection? > No idea what all of that means. Contact support at fastmail.com? I am only helping with you sending mail from Comcast ISP. > > Thanks again... > > > > > On 4/19/20 12:39 PM, Jason Pyeron wrote: > >> -----Original Message----- > >> From: S.Bob > >> Sent: Sunday, April 19, 2020 2:26 PM > >> To: centos at centos.org > >> Subject: Re: [CentOS] [Off topic] sending mail from Comcast was: Sendmail not working > >> > >> I followed this guide: > >> > >> > >> https://pepipost.com/tutorials/install-sendmail-server-centos-7/ > > Sigh - bad examples for you.... undo if you can. > > > > Postfix provides the "sendmail" utility. > > > > # rpm -qf `which sendmail` > > postfix-2.10.1-7.el7.x86_64 > > > >> > >> now I get this: > >> > >> > >> # echo "Subject: sendmail test4" | sendmail kevink at psalm19pix.com > >> [root at kdb-bugs auth]# echo "Subject: sendmail test4" | sendmail -v > >> kevink at psalm19pix.com > >> kevink at psalm19pix.com... Connecting to [127.0.0.1] via relay... > >> kevink at psalm19pix.com... Deferred: Connection reset by [127.0.0.1] > >> Closing connection to [127.0.0.1] > > > > What does /var/log/maillog say ? > > > >> > >> > >> Thoughts? > >> > >> > >> On 4/19/20 11:08 AM, Jason Pyeron wrote: > >>>> -----Original Message----- > >>>> From: Tim Evans > >>>> Sent: Sunday, April 19, 2020 12:50 PM > >>>> > >>>> 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 at 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. > >>> There are a few situations here. > >>> > >>> 1. You are a business customer with a static IP, and are entitled to send/receive SMTP by your ISP > >> (Comcast) > >>> 2. You are a business/residential customer who is allowed to send (not likely allowed to receive) > >> SMTP and you have a domain elsewhere to receive replies to your email > >>> 3. You are a business/residential customer who is NOT allowed to send SMTP except for your ISP > >> (Comcast) provided email. > >>> Only you would know which on for sure is you, but it is very likely #3. > >>> > >>> The advice provided previously is for case #1 - contact Comcast and inform them that your > contracted > >> services are not working because of .... and you will need to beable to work with them on testing > and > >> suggesting fixes. They have a dedicated support phone number (which they provided you if you are > >> actually a #1 type customer - e.g. gigabit pro, metro Ethernet, etc.) > >>> In case you are a #2 or #3 type customer, you may want to use a smart host configuration - e.g. > >> define('SMART_HOST','[smtp.comcast.net]') . For postfix, use relayhost = [smtp.comcast.net] . > >>> Now when you send mail to that relay it will relay it. This is provided you are entitled to have > >> your email relayed - contact Xfinity customer service for help there. > >>> If using this relay does not work, please post the exchange starting with the HELO (check your > >> maillog or do it by hand with telnet). > >>> -- > >>> Jason Pyeron | Architect > >>> PD Inc | > >>> 10 w 24th St | > >>> Baltimore, MD | > >>> > >>> .com: jpyeron at pdinc.us > >>> tel : 202-741-9397 > >>> > >>> > >>> > >>> > >>> _______________________________________________ > >>> CentOS mailing list > >>> CentOS at 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 at centos.org > >> https://lists.centos.org/mailman/listinfo/centos > > _______________________________________________ > > CentOS mailing list > > CentOS at 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 at centos.org > https://lists.centos.org/mailman/listinfo/centos