Southern Star - Mail Front-End Information

General

Get whoever is hosting the DNS for the your domain to point the MX 10 record to mail.idsno.net and the MX 20 record to queue.idsno.net. If it doesn't already, the mail.<domain> A record should point to your mail server.

To prevent spam and viruses from being sent directly to your mail server, thus bypassing our front-end scanning, put a rule in your firewall or mail server to allow incoming SMTP traffic from only mail.idsno.net (206.41.40.247), queue.idsno.net (204.107.105.252) and quarantine.idsno.net (206.41.40.246).

Features

Mail addressed to your domain comes to our server first, get checked for viruses and spam, then is sent to your server for normal processing
If your server is down, mail is held here for you for up to 3 days
Requires only a simple change to your DNS and firewall

There is more information about the mail server here.

Notes

To test your or a user's mail account, send a message from the account to Test. There should be a reply. If not, there is a problem.
Some versions of Windows and some applications running under Windows do not expire DNS information when they should. They continue to operate, sometimes for days, with obsolete DNS info. Rebooting solves this problem.