[Dovecot] Dovecot MTA

[Michael Kliewe]

Hi Timo,

I would also, like others, see you mainly working on Dovecot as an IMAP 
server. As far as I can see there are many things on the roadmap, and I 
hope many more will be added (for example a built-in health-checker for 
director backends).

Only if you have enough personal resources and Dovecot as an IMAP server 
will not "loose your attention", I would love to see your expertise in 
making a better MTA.

You are talking about bigger ISP installations, and there you always 
have at least 3 tiers: Internet-facing SMTP servers, 
in-the-middle-SMTP-servers delivering local mail to Dovecot via LDA or 
LMTP, and some outbound SMTP servers. For these middle-SMTP-servers that 
more or less just connect to Dovecot to deliver local mails I could see 
a more lightweight MTA solution, so instead of having Postfix+Dovecot I 
would like to see Dovecot(+MTA features) only.

I'm not sure if I would use your MTA as the Internet-facing server, 
where "just" a fast SMTP server is needed with good Spam filters, 
Anti-DDOS-Features and so on. But that would be the position where all 
your strict DNS and TLS features are needed. I would love making email 
more secure by default.

I totally like your idea of the object storage instead of local files 
for queues. That is an awesome feature for situations where your 
harddisks fails, your postfix-server burns down or goes into long 
maintenance. Having mails in a more central (redundant) place is very 
cool, so if one server dies another can quickly take over all "his" 
mails. That feature is awesome for the outbound SMTP servers, where 
millions of mails are "stored" in the queues for many days, a harddisk 
failure is a big problem there.

Sum up: I would love to see you working on a MTA, but ONLY if you don't 
neglect the worlds best IMAP server :-)

Michael