I have an IMail 7.07 server running Declude Junkmail. The server sits behind aCisco's PIX firewall is not RFC-compliant. It is intentionally blocking the SMTP greeting. At least they have fixed the big bug (originally, there was a bug that would cause all "2"'s and "0"'s to come through without being blocked, reducing the value of the security measure).
Cisco PIX firewall. If I telnet server 25 from inside the firewall I receive
a normal 220, however, from the outside, the 220 responds as all asterisks.
I know this isn't an IMail problem, but was hoping someone might have a quick
answer for me. What, other than POP & SMTP ports, must be allowed to pass
through the firewall in order to receive a proper 220 Server Welcome Message?
That may be part of their infamous "SMTP fixup" protocol, or there may be a separate option to disable the SMTP greeting blocking.
-Scott
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Declude: Anti-virus, Anti-spam and Anti-hijacking solutions for IMail. http://www.declude.com
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