[ww-devel] setting up postfix on test1.webwork.maa.org

Mon Feb 3 13:52:35 EST 2020

Mike,

I was testing postfix relay smtp on the server but no luck. I dont want to
edit too many things that you were working on it so I stop. I guess Im
going to test out on another server.

By the way, I add smtp ports(25 and 587) on the security group network in
aws. It doesnt seem like you are configuring for smtp relay on postfix so
Im not sure. Please try again since I add smtp ports on network.

[image: MAA logo.PNG]

*Simon Park*

*IT Project Coordinator/System Administrator*

Mathematical Association of America

1529 18th Street NW

Washington DC 20036

Direct: 202.319.8492

www.maa.org

On Mon, Feb 3, 2020 at 10:51 AM Nathan Wallach <taniwallach at gmail.com>
wrote:

> Usually /etc/postfix/main.cf with a "relayhost" line. Something like:
>
> relayhost = [mailserver.domain.com]
>
>
>    - http://www.postfix.org/BASIC_CONFIGURATION_README.html#relayhost
>
>
> It is often informative to have a look at the data logged
> in /var/log/maillog when debugging outgoing mail issues. Here are sample
> log lines from a mail from tani at mathnet.technion.ac.il to
> taniwallach at gmail.com. We have relayhost=[mrelay.technion.ac.il] set
> nowadays.
>
> Feb  3 14:31:45 mathnet postfix/pickup[112819]: 76EAE205BA: uid=301 from=<
>> tani at mathnet.technion.ac.il>
>> Feb  3 14:31:45 mathnet postfix/cleanup[113064]: 76EAE205BA: message-id=<
>> DB7PR01MB42829D0D1E0A4CED2B1DA570C2000 at DB7PR01MB4282.eurprd01.prod.exchangelabs.com
>> >
>> Feb  3 14:31:45 mathnet postfix/cleanup[113064]: 76EAE205BA:
>> resent-message-id=<
>> alpine.LRH.2.21.2002031431420.112911 at mathnet.technion.ac.il>
>> Feb  3 14:31:45 mathnet postfix/qmgr[62347]: 76EAE205BA: from=<
>> tani at mathnet.technion.ac.il>, size=35121, nrcpt=1 (queue active)
>> Feb  3 14:31:45 mathnet postfix/smtp[113232]: 76EAE205BA: to=<
>> taniwallach at gmail.com>, relay=mrelay.technion.ac.il[132.68.225.14]:25,
>> delay=0.24, delays=0.01/0/0.23/0.01, dsn=2.0.0, status=sent (250 ok:
>>  Message 174854163 accepted)
>> Feb  3 14:31:45 mathnet postfix/qmgr[62347]: 76EAE205BA: removed
>
> <http://www.postfix.org/BASIC_CONFIGURATION_README.html#relayhost>
> Here are records from longer ago (2016), when no relayhost setting was
> used (from a saved log file from some debugging effort) so mails were sent
> directly to the destination mail-servers based on DNS MX records:
>
> Jun 13 20:30:41 mathnet sendmail[28335]: u5DHUfDu028335: from=<
>> tani at mathnet.technion.ac.il>, size=4535, class=0, nrcpts=2, msgid=<
>> alpine.LRH.2.00.1606132028360.28068 at mathnet.technion.ac.il>,
>> bodytype=8BITMIME, proto=ESMTP, daemon=MTA, relay=localhost.localdomain
>> [127.0.0.1]
>> Jun 13 20:30:41 mathnet sendmail[28334]: u5DHUfHP028332: to=<
>> user1 at techunix.technion.ac.il>,<user2 at gmail.com>, ctladdr=<
>> tani at mathnet.technion.ac.il> (301/301), delay=00:00:00, xdelay=00:00:00,
>> mailer=relay, pri=154380, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0,
>> stat=Sent (u5DHUfDu028335 Message accepted for delivery)
>> Jun 13 20:30:42 mathnet sendmail[28339]: u5DHUfDu028335: to=<
>> user2 at gmail.com>, ctladdr=<tani at mathnet.technion.ac.il> (301/301),
>> delay=00:00:01, xdelay=00:00:01, mailer=esmtp, pri=154535, relay=
>> gmail-smtp-in.l.google.com. [74.125.133.26], dsn=2.0.0, stat=Sent (ok:
>>  Message 68070280 accepted)
>> Jun 13 20:30:42 mathnet sendmail[28339]: u5DHUfDu028335: to=<
>> user1 at techunix.technion.ac.il>, ctladdr=<tani at mathnet.technion.ac.il>
>> (301/301), delay=00:00:01, xdelay=00:00:00, mailer=esmtp, pri=154535, relay=
>> techunix.technion.ac.il. [132.68.1.192], dsn=2.0.0, stat=Sent (Ok:
>> queued as 34E7A2A0085)
>>
>
> Back in 2017 before we set up the SPF record for mathnet, the logs had
> very many entries like:
>
> Mar 15 20:48:49 mathnet postfix/smtp[77351]: 7DBB820395: host
> gmail-smtp-in.l.google.com[173.194.76.26] refused to talk to me: 421
> #4.4.5 Too many connections from your host.
>
> which all started to happen after changes made to the Technion's main SPF
> record.
> <https://support.google.com/a/answer/33786?hl=en>
> More on SPF: https://support.google.com/a/answer/33786?hl=en
>
> Another issue which can cause trouble is the lack of reverse DNS records:
> http://stackoverflow.com/questions/35430457/sendmail-452-4-5-3-too-many-recipients
>
> On Mon, Feb 3, 2020 at 5:18 PM mgage <gage at math.rochester.edu> wrote:
>
>> I’ve decided to use postfix since reports are that it is easier to
>> configure.
>>
>> I have it working in the sense that bugzilla, for example, claims that
>> mail is sent off.  Also
>>
>> mail  gage at math.rochester.edu  or mail michaelegage at gmail.com
>>
>> doesn’t give any errors.  It also doesn’t deliver the mail — I never
>> receive messages at either of those locations.
>>
>> Most likely there is some kind of spam filter (I have checked the spam
>> filters on each of those sites) that is blocking mail.
>>
>> Where do you configure postfix to use gmail as mail relay?  That might be
>> the problem or it might be something among the issues that Tani brings up.
>>
>> Take care,
>>
>> Mike
>>
>> On Feb 3, 2020, at 10:13 AM, Simon Park <spark at maa.org> wrote:
>>
>> Mike,
>>
>> I played around with postfix a long time ago. I believe you need to
>> configure postfix/sendmail to use Gmail as a mail relay. So which email
>> server are you going to use? postfix or sendmail?
>>
>> [image: MAA logo.PNG]
>>
>>
>> *Simon Park*
>> *IT Project Coordinator/System Administrator*
>>
>>
>> Mathematical Association of America
>> 1529 18th Street NW
>> Washington DC 20036
>> Direct: 202.319.8492
>> www.maa.org
>> <https://urldefense.proofpoint.com/v2/url?u=http-3A__www.maa.org&d=DwMFaQ&c=kbmfwr1Yojg42sGEpaQh5ofMHBeTl9EI2eaqQZhHbOU&r=C6Pt5AGtImanmAdcooarL-JZO8M5dSFPfs3VweYXYkE&m=OdSIWfnfO3gsmqfjCl1kfDoX9ht1LueGWAlRHe-aUbY&s=gSZywVW22QsbnvrLJfAJgTKMC9xWNT_RZF-5elYOW38&e=>
>>
>>
>>
>>
>>
>>
>>
>>
>> On Sat, Feb 1, 2020 at 10:31 PM mgage <gage at math.rochester.edu> wrote:
>>
>>> Hi Simon,
>>>
>>> Are you familiar with setting up postfix (or exim) on ubuntu?  It’s a
>>> mail transport app like sendmail.
>>>
>>> I have step by step instructions but I suspect it will go faster if
>>> someone familiar with the process does it (or watches me while I do it :-)
>>> ) .
>>>
>>> The sendmail/postfix process on test1.webwork.maa.org
>>> <https://urldefense.proofpoint.com/v2/url?u=http-3A__test1.webwork.maa.org&d=DwMFaQ&c=kbmfwr1Yojg42sGEpaQh5ofMHBeTl9EI2eaqQZhHbOU&r=C6Pt5AGtImanmAdcooarL-JZO8M5dSFPfs3VweYXYkE&m=OdSIWfnfO3gsmqfjCl1kfDoX9ht1LueGWAlRHe-aUbY&s=ODSrqJ4eylaNz5bdxalKeuKJc4FKEoZePke2xoMEamA&e=> is
>>> not working properly and it is holding up installation particularly of
>>> bugzilla
>>> (and perhaps the other apps, mediawiki and moodle as well)
>>>
>>> If you haven’t installed postfix or sendmail on one of the other ubuntu
>>> installations at MAA then don’t worry about it. I’ll
>>> plow through the instructions.
>>>
>>> Thanks.
>>>
>>> Take care,
>>>
>>> Mike
>>>
>>>
>> _______________________________________________
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>> webwork-devel at webwork.maa.org
>> http://webwork.maa.org/mailman/listinfo/webwork-devel
>>
>
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