What do you use for handling your business e-mail
 

I was wondering what most people use for their business e-mail.

I don't run e-mail servers on my production boxes for security reasons, so I have been using Yahoo Small Business Mail, but they have been having some problems recently.

What do most folks use?

I outsource mine to a local company that has a good reputation around here. Let me know if you want their info.

postfix

If you're worried about sendmail's poor history security-wise then you should consider postfix. Also keep in mind that if you're really paranoid you can always set up a small dedicated mail server (400Mhz celeron with 32MB Ram and a 20GB IDE would do for most small - medium businesses as long as the network card is top notch) and then chroot the thing.

Anyway postfix isn't a single executable that has to run as root like sendmail. It has multiple programs that handle each aspect of the mail delivery and only the functions that absolutely must run as root do so.

Also if you're worried about pop3 or imap passwords you can use SSL. We did that at one company I sysadmin'd at.

It's cheaper than outsourcing and more flexible than using a paid for service. Most of my spam is filtered at the server .. and I have a ton of safe-guards in place to help prevent spoofing etc.