[IoMLUG] Is this list still alive?

[Graham Allott]

I've tried a few different ports but back on port 25 now, I can telnet in
but an EHLO command hangs (that used to work until recently). I'm also
getting TLS errors - so I think the problem stems from changing the FQDN (I
sold a dot org domain and registered the dot im equivalent last week). I
generated new certs with Let's Encrypt and modified the MX / DNS records
and config files but think a fresh install is probably easiest - I've
tinkered with too many files to keep track now!


On Tue, 23 Jan 2024 at 10:00, Daniel Ankers <md1clv at md1clv.com> wrote:

>
> On Mon, 22 Jan 2024 at 18:32, Graham Allott via IoM <
> iom at mailman.lug.org.uk> wrote:
>
>> If anyone has any tips for setting up Postfix / Dovecot on Gentoo I'd be
>> happy to hear them - it was working with one virtual domain but changed the
>> main domain and everything's broken.... I ran Qmail servers from over 20
>> years ago up to about two years ago - know that well enough but it's just
>> too old now....
>>
>>
> Not specific setup tips, but general troubleshooting ones (which you
> probably know anyway from your Qmail days):
>
> If the problem is incoming mail:
> 1) Can the rest of the world find where it should be sending mail to? i.e.
> is there a DNS MX record for your main domain which points to the name of
> your mailserver, and is there an A/AAAA record pointing to the IP of your
> mailserver (it's worth checking this with something like Dig in case your
> domain name registrar has helpfully added extra records.)
>
> 2) Can the rest of the world reach your Postfix server? This is easy to
> check by telnetting to it on port 25.
>
> 3) Is Postfix delivering to Dovecot?  I don't know where Gentoo configures
> Postfix and Dovecot to log to by default, but /var/log/mail.log is pretty
> common
>
> There might also be clues in the Postfix mail queue (postqueue -p)
>
> If the problem is outgoing mail, generally the Postfix mail queue and log
> are a good place to start looking for what the server is actually doing
> with the mails.
>
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