> -----Original Message-----
> From: S.Bob
> Sent: Sunday, April 19, 2020 3:48 PM
> To: centos@xxxxxxxxxx
> Subject: Re: [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@xxxxxxxxxxx # if this works, then test
> outside email
> >
> > echo "Subject: sendmail test4" | sendmail kevink@xxxxxxxxxxxxxx # 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@xxxxxxxxxx
> >>>> Subject: Re: [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@xxxxxxxxxxxxxx
> >>>> [root@kdb-bugs auth]# echo "Subject: sendmail test4" | sendmail -v
> >>>> kevink@xxxxxxxxxxxxxx
> >>>> kevink@xxxxxxxxxxxxxx... Connecting to [127.0.0.1] via relay...
> >>>> kevink@xxxxxxxxxxxxxx... 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@xxxxxxxxxxxxxxxxxxxxx>
> >>>>>>>>> (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@xxxxxxxx
> >>>>> tel : 202-741-9397
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>> _______________________________________________
> >>>>> CentOS mailing list
> >>>>> CentOS@xxxxxxxxxx
> >>>>> 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@xxxxxxxxxx
> >>>> https://lists.centos.org/mailman/listinfo/centos
> >>> _______________________________________________
> >>> CentOS mailing list
> >>> CentOS@xxxxxxxxxx
> >>> 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@xxxxxxxxxx
> >> https://lists.centos.org/mailman/listinfo/centos
> > _______________________________________________
> > CentOS mailing list
> > CentOS@xxxxxxxxxx
> > 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@xxxxxxxxxx
> https://lists.centos.org/mailman/listinfo/centos
_______________________________________________
CentOS mailing list
CentOS@xxxxxxxxxx
https://lists.centos.org/mailman/listinfo/centos
