[Bradford] Round and round the email server

[Devo Too]

Hi Folks,

I'm still stuck and unable to move forward with a mail server, which for 
more weeks than I care to count, has also stymied any chance of progress 
on various initiatives I'm involved in. This is on a remote server in a 
data centre, not on a desktop hidden behind my own router.

The damned thing is still refusing all connections, incoming and 
outgoing. Not iptables, that's been removed from the list of suspects, 
although there may be some other port or routing configuration I'm not 
aware of. Nor can I find any fault in the DNS or reverse DNS setups. 
/var/vmail/mailboxes/* appears to have the correct ownership and 
permissions. But I don't have the experience to put my finger on 
anything else specific.

So if anybody is up on DNS, firewalls, the 
Postscript/Dovecot/Rspamd/Redis/MariaDB email server on Debian (it says 
Stretch but I'm trying it on Buster) by Thomas Leister, see 
https://thomas-leister.de/en/mailserver-debian-stretch/ please do get in 
touch.

Alternatively, if any of you know a freelance sysadmin who knows about 
this stuff, please pass on this email address and ask them to contact me 
asap.

With regard to freelance work, this is likely to become a feature with 
the amount of server work supporting the various projects growing over 
time. Provided, of course, I can get this damned thing sorted out before 
the whole edifice collapses around my ears.

Seasonal bahh humbugs and TIA,

Mike