Re: Linux Email solution Qustions
From: Nico Kadel-Garcia (nkadel_at_verizon.net)
Date: Sat, 06 Sep 2003 00:12:44 GMT
> Thanks Nico,
> I think I got a similar answer on Alt.os.linux. Which suggested I set
> up a Linux box, install Fetchmail, have it pull the pops in and
> distribute locally from there.
> Is this about the same as you suggested?
Similar in result, very different in implementation. Rather than doing
the transfers of messages via IMAP or POP and having processes run for
each individual user, you turn off the external SMTP server and use the
internal one instead, *OR* you tell the external SMTP server that all
received email for your domain is to be transferred via SMTP to your
internal server, which is quite easy to do with most SMTP servers. No
fetchmails or user passwords for fetchmail to have to keep online or
individual user account setups on the external server, and if your
internal server gets horked for a bit of time, the external one will
spool the email for you.
You can also take advantage of things like "virtusertable" in sendmail
to do different things with individual user's mail on the external
server: pick a different department's internal SMTP server to pass along
the mail to, for example, and have the different internal SMTP servers
act as SMTP backups for each other to spool the mail when one of them
goes down for internal traffic.
Nya-ha-ha, I'm giving away all *sorts* of secrets about large setups