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[FW1] FW1 smtp security server



Hello,
we have FW1 4.1 on Solaris 2.6, and want to setup an Interscan Viruswall 3.6
server for SMTP.
We have setup the following rule in the FW:

ANY     mailhost.mydomain      smtp->InboundMail    Accept

We have defined tha antivirus server object, and the SMTP-with-resource
object has the following options:

-mail server: mailhost.mydomain
-CVP:   server: antivirus-server  (Read/Write)

All messages send to the maihost.domain pass through the FW, go to the
Antivirus, are scanned if needed, and go to the mailhost.mydomain in the
right way.
The problem becomes at the moment the mail client tries to establish a
connection to the mailhost.server. In this case, the connection delays since
more than a minute sice it can send the mail.
In the case we do a telnet connection to the port 25 of mailhost.domain,
every thing seems to work fine, because immediately appears the FW SMTP
secure server banner.
In case we disable the FW rule, direct connections to mailhost.mydomain work
fine.
Any idea about what is happening? Thank you.






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