>So is it the same to block port 25 and to block OPEN RELAY on the Imail
>server?
no, totally different. block port 25 means to packet filter:
pass all traffic from <your ip blocks> to <your mail server(s) ip
address> port 25
block all traffic from <your ip blocks> to <any ip address> port 25
you still require your users on your ip's to SMTP AUTH at your mail
server before relaying their mail.
>forget how I've got mine set, but I remember something about the
>option. To help avoid being used by a spammer... you are saying to uncheck
>the open relay option?
There is no such named option. It's called "relay for
addresses". And UNcheck Disable SMTP AUTH reporting (SMTP
annoucement) since some mail programs won't try SMTP AUTH if they
don't see it supported in the SMTP announcements. SMTP AUTH cannot
be diabled in Imal, but it can be NOT announced.
Len
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