> -----Original Message----- > From: S.Bob > Sent: Sunday, April 19, 2020 3:48 PM > To: centos at centos.org > Subject: Re: [CentOS] [Off topic] sending mail from Comcast was: Sendmail not working > > my relay will be smtp.fastmail.com and it requires authentication and > SSL, are there added settings in main.cf that will allow this? > No, you are using Comcast / Xfininty per your IP address 50.243.150.81. Please follow the instuctions. > > Thanks > > > > On 4/19/20 1:09 PM, Jason Pyeron wrote: > >> -----Original Message----- > >> From: S.Bob > >> Sent: Sunday, April 19, 2020 2:52 PM > >> > >> > >> > >> I get this: > >> > >> # rpm -qf `which sendmail` > >> postfix-2.10.1-7.el7.x86_64 > >> sendmail-8.14.7-5.el7.x86_64 > >> > > yum erase sendmail # undo what you did before... > > yum reinstall postfix # just in case it is messed up > > rpm -V postfix # lets verify if postfix is ok > > systemctl enable postfix # start on boot > > systemctl start postfix # start it now > > systemctl status postfix # see the status > > > > # setup Xfinity / Comcast SMTP relay ISP > > edit /etc/postfix/main.cf around line 315 > > add > > relayhost = [smtp.comcast.net] > > > > > > systemctl restart postfix # restart to make changes effective > > systemctl status postfix # check status > > > > echo "Subject: sendmail test4" | sendmail your_xfinity_email at comcast.com # if this works, then test > outside email > > > > echo "Subject: sendmail test4" | sendmail kevink at psalm19pix.com # does it get there? > > > >> > >> > >> 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 > > _______________________________________________ > > 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