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Old 08-25-2004, 02:49 AM   #1
gubak
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Registered: Jul 2004
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Open relay


I use Postfix.
I've just configured mail server. It's work, but it is an open relay.
How can I change the configuration of mail server not to work like an open relay?

Last edited by gubak; 10-20-2006 at 06:38 AM.
 
Old 08-25-2004, 01:02 PM   #2
bastard23
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Distribution: Debian
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How do you know it's an open relay?

Make sure smtpd_recipient_restrictions in main.cf has a reject restriction, specifically reject_unauth_destination.

The default, i believe is:
smtpd_recipient_restrictions = permit_mynetworks,reject_unauth_destination

and according to sample-smtpd.cf:
# NOTE: YOU MUST SPECIFY AT LEAST ONE OF THE FOLLOWING RESTRICTIONS
# OTHERWISE POSTFIX REFUSES TO RECEIVE MAIL:
# reject, defer, defer_if_permit, reject_unauth_destination

So you shouldn't be an open relay by default. What have you done to make it an open relay?
 
  


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