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allow smtp from one host only

I have an internal mail server and would like to block all outgoing smtp traffic from other hosts.
Under the smtp settings 'Allow relay from', I currently have eth0 (network).
Problem is that all internal hosts can send smtp.
When I select the name of my mail server and remove eth0, no mail goes out.
I really need to block al other traffic as our IP got blocked by spamhaus because of a virus ...
What am I doing wrong?

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0 PabloDiablo over 17 years ago

Hi, I don't know what version your using of ASG. But AFAIK in V6 & V7 there is an option to only allow SMTP-traffic from a specific host or hosts. In V7 you'll find here:

-> E-mail Security -> SMTP ->(TAB) Relaying -> Host-based relay -> fill in here your mailserver

This way only relaying should be allowed by the filled in server.

Hopefully this helps...
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