MX Record

[Mark_Andrews at isc.org]

> Hi,
> 
> I would like to configure my SMTP to use other port other than 25. Anyone
> any idea how that can be done.
> 
> This is to help to filter crooks who try to use my SMTP to sent emails.
> Thanks in advance.
> 
> OSC

	Why bother.  A proper analysis will show you that this is a
	waste of time.
	
	Why don't you just have multiple MX records and configure your
	firewall to only accept SMTP connections from the other MX's.
	Note you should have your firewall send resets rather than silently
	ignoring the SMTP traffic.

	Also this is very off topic.
	
	Mark
--
Mark Andrews, Internet Software Consortium
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews at isc.org