Your order
Bill Hacker
wbh at conducive.org
Fri May 1 12:32:50 PDT 2009
Matthew Dillon wrote:
Bleh. This is annoying. The spams are using a From: field for a
subscribed user.
Anyone know an easy way to disallow use of crater's domain name
in the From: field for SMTP connections from remote locations?
using sendmail?
-Matt
Matthew Dillon
<dillon at backplane.com>
Using Exim it is dead-easy. Sendmail is capable enough - but sort of
like working in machine-code. For a Varian 520i... haven't done either
one is *years*...
;-)
But the forgery won't matter if you reject on rDNS fail of an incoming IP.
'Real' MTA have proper PTR RR. Always.
Zombies, never.
Bill
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