Agreed that 10 megs is a joke though I don't know that I would have so quickly adopted an internal mail server. There are a number of things to worry about. For example, you open yourself up to mailbombs, which can intentionally or unintentionally take your server and / or Internet connection down. You also need to make sure you require some sort of login with your outgoing email because you don't want to be caught running an open relay. If so, the spam ramifications are potentially disastrous. If you don't get your reverse DNS issue resolved, you won't get a sizable chunk of legitimate email. Many mail systems do reverse lookups to make sure you are who you say you are.
I know these things because I have been running sizeable email systems on the Internet for many years. My suggestion would be to investigate moving your mail domain to gmail. Not only do you get great webmail with over 2 gigs of storage, they manage the spam and exposure issues running your own server creates. I'm not saying don't run your own server, just be aware of the issues involved.
Yes, I know about the issues of running our own mail server, and the email is all authenticated relay only (it also will only relay from some IP addresses as well). And Google also has email size limitations -- only the mailbox itself is 2 Gigs. Gmail used to restrict messages to 10 Megs, just like most other services.
We'll see how this works out. We do have a reverse DNS lookup, it's just Verizon's static address version. I want it branded properly.
Thanks for the thoughts; feel free to send more! Always good to know about pitfalls.
Carl
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