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Old 08-04-2006, 10:06 AM   #1
Registered: Dec 2005
Location: Israel
Distribution: used : Ubuntu, Debian, Arch. current : Centos.
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postfix - mynetwork option

if i dont want to restrict any ip or u can say, if i want any ip be able to send from my postfix machine, what should i set in the mynetwork option if i should set it at all. by the way what is the default?
can i restrict only by the domain?
Old 08-04-2006, 01:28 PM   #2
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You could put in but that will make your machine an open relay if it's exposed to the internet. Then you'll get on every blacklist imaginable and all mail sent from your server will be rejected.

Just set up SMTP Auth with SASL.

Should be a guide on how to do it here or search on Google.
Old 08-04-2006, 02:56 PM   #3
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im already set sasl. but tnx.
im aware about open relay and other security issues.
Old 08-04-2006, 08:55 PM   #4
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can i restrict only by the domain?
Yes. I suppose you mean the domain which is the reverse lookup of the connection IP.
You'll need to have something like
smtpd_recipient_restrictions = 
   check_client_access hash:/etc/postfix/access_clients
This will allow anyone in mynetworks and domains listed in access_clients to send mail anywhere.
See postconf(5) for details. Also take a look at access(5) for access table formats.
I don't see a need to modify mynetworks.


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