[aclug-L] Re: MTAs & maildir vs mbox (was Re: Virtual POP3 and IMAP server)

[Chris Owen <owenc@xxxxxxxxxxxx>]

On Fri, 19 Oct 2001, Carl D Cravens wrote:

> On Fri, 19 Oct 2001, Ryan Hunt wrote:
>
> > we have 92 virtural domains hosting in qmail and proably a 500-1000 users
> > and havent problems
>
> SouthWind ran over a hundred virtual domains and over 10,000 users on
> Sendmail.  The only problems we ever had with it was due to
> configuration error.

As far as I can tell (and since Steve is sitting right across from me and
says it is so I think I'm right), Southwind didn't do real virtual domain
on onyx.  /etc/mail/virtusertable and true virtual names really aren't the
same thing.

We currently have about 8,000 users and ~100 domain names on our POP box
and we have no problems.  However, we too really aren't true virtual names
(there can't be more than one POP account with same username).  We looked
at lots of mailers for the new POP box we are building and in the end
decided to stay with sendmail.  The reason really is for POP purposes the
MTA really isn't doing that much.  Accept mail and pass of to local
delivery agent.  Not that hard.

For inbound MX and outbound SMTP we are probably going to be moving away
from sendmail.  Postfix looks like the winner now, mainly because of the
ease with which you can handoff to external filters.  We scan all incoming
email (and will be scanning outbound) for virii and that is a bit harder
to do with sendmail (milter is not ready for prime time in my opinion).

I think the only real solution to this age old war is that each MTA has
its strengths.  Those strengths will make each one better suited for
specific tasks.  For out purposes we kept sendmail for the POP server for
really no other reason than familiarity.  If anything can do the task then
stick with what you know.  Much easier to solve those 2am emergencies if
you stick to what you know.

Chris

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