jasonegli wrote:
For example let's say that domain xyz.com wants to allow all messages from yahoo.com, but domain 123.com does not. Is there a way to allow "FROM [EMAIL PROTECTED] TO [EMAIL PROTECTED]"?
Obtuse SMTPD (http://sd.inodes.org/) can handle this at the SMTP level. I think it may be possible to add this to MailScanner (http://www.mailscanner.info/) through it's custom rules; its default whitelists/blacklists, however, are global.