Outbound spam prevention & reaction
ssilva at sgvwater.com
Wed Dec 12 19:42:05 GMT 2007
on 12/12/2007 9:59 AM A&M ImpacT [W. Kranenborg] spake the following:
> I don't accept mail for unknown recipients. Spammers send mail from an
> emailadres of one of our customers. 20% of the mail to scan for them are
> bounces of spam with the customers email-adress.
> Don't pay attention to my bad englisch.
> Greets Wessel
If you have a separate outbound server you can also have strict rules of what
ip addresses to accept mail from. If they are your customer, their ip
addresses should be info you have. Spammers can fake the address easily, but
it is very difficult to fake the ip address that is connecting. Or you can
force your customers to have to auth to your server, or use certificates, or
whatever other system you can think of and support easily.
MailScanner is like deodorant...
You hope everybody uses it, and
you notice quickly if they don't!!!!
More information about the MailScanner