topic Re: PIX 515 with smtp in Network Security

PIX 515 with smtp

logintck — Fri, 21 Feb 2020 05:59:55 GMT

Dear

I am beginner of PIX

I set up a network

Internet ----PIX--- mailserver and DNS

And I run the following command

conduit permit udp DNS eq 53 any

conduit permit udp mailserver eq smtp any

I can resolve the MX and IP of mailserver in internet zone.

When I send mail to mailserver from internet, it can't delivery.

So I telnet mailserver with port smtp

The connection is ok but after 1 second the connection is dropped.

DO u have any idea of this problem

Thank you

cjacinto — Sun, 10 Mar 2002 05:34:52 GMT

Check your config against:

The turn on logging to troubleshoot with:

logging buffered debugging, then do a show log to

see who is sending the reset. You might want to do

a clear log before doing the tests.

kdlittletree — Sun, 31 Mar 2002 05:41:46 GMT

conduit permit udp mailserver eq smtp any

should be:

conduit permit tcp mailserver eq smtp any

smtp is over TCP. hope this helps

tulo — Tue, 02 Apr 2002 06:35:52 GMT

SMTP uses TCP ...