I'd very much like to move my (Postfix) mail server, which currently resides
on a (static IP) end-luser broadband line, to some VM in the cloud someplace,
and then use something like fetchmail to poll that periodically to pull
down all mail for my several domains and then have fetchmail re-inject
all of those mail messages into the local Postfix. The plan would be to
get all this running and then give up my local static IP here, exchanging
it for a dynamic one instead. (This will save me a tiny bit of money on
my monthy local ISP bill.)
Googling for options just now, it sure sounds like ODMR/ATRN would fit
my needs nicely, however I can't quite make out whether any of this
ODMR/ATRN stuff has ever actually been implemented in Postfix or not.
Has it been?
Regardless of whether it has or not, if anyone wants to suggest or recommend
any alternative solution(s) I'm all ears. I am open to anything that
will get the job done. My only real requirements for a solution are:
1) Must support unlimited email addresses per each recipient domain.
2) Must preserve envelope sender information.
In general, speed is not an issue, but security most certainly is.
That having been said, I am not eager to use Jakob Hirsh's odmrd because
that SMTP server is written in Perl, and I've been known to be DDoS'd
from time to time. So I'm loath to leave anything written in Perl running
on any outward facing port. It's just way too easy for an attacker to
run the CPU usage up to 100% and keep it there if one does so.
Looking forward to info on Postfix support for ODMR or alternatives thereto.
Regards,
rfg
