[ale] Anyone have experience hosting email for multiple domains?

[Richard Bronosky]

On Mon, Aug 31, 2009 at 1:34 AM, Matt Rideout<mrideout at windserve.com> wrote:
> Postfix and Dovecot are both good choices. In the past, I've setup
> Postfix and Dovecot using the docs on their sites. Glancing over the
> CentOS doc, it looks like it'll at least get you moving in the right
> direction. IMO, there's no need to bother with virtual users until you
> have a vanilla setup functional, and are comfortable with it. Once you
> have that going, dig into Virtual Users. A few random pointers:
>
> 1. yum is your friend.
> 2. Don't be tempted to stray towards sendmail unless you have a very
> good reasons. It's a PITA.
> 3. Make sure that sendmail is fully shutdown, and disabled before you
> try to get Postfix working.
> 4. Test to make sure you don't have an open relay going each time you
> make a configuration change.
> 5. Make sure that you have reverse DNS properly setup for your mail
> server's IP.
> 6. Make sure that your mail server's IP isn't on any major blacklists
> before going live.
>

Lot's of good stuff here, thanks. Unfortunately I have to have to
virtual domains/users working and working right. It is replacing an
existing setup that I have set up in cpanel with another hosting
company. I have to get it set up right and fast.

How do I do #4?
I have concerns about #5 too. Since I will have 8 domains, and cand
have only 1 PTR record... I have to figure that out.

-- 
.!# RichardBronosky #!.