SpamAssassin Hangup

[Peter Peters]

On Tue, 16 Jul 2002 13:36:39 +0600, you wrote:

>> MX testing is one of the things I still do in Sendmail itself (4xx
>> error). These are the only mails that have truely no right to enter our
>> system. Nobody can respond to such an e-mail so why accept it.
>
>Ouch!  You will reject some legitimate mails.  If no MX is defined for a
>host, mail will go directly to that host if it has an A record.

It is called MX-checking because 99% of the domain parts in e-mail
addresses point to MX-records. But if an A-record is returned the mail
is accepted too.

--
Peter Peters
senior netwerkbeheerder,  Centrum voor Informatievoorziening,
Universiteit Twente,   Postbus 217,  7500 AE  Enschede
telefoon: +31 53 489 2301, fax:+31 53 489 2383, http://www.utwente.nl/civ