I have an exchange server 2000 setting behing a three interface PIX 515E. I am unable to telnet to port 25 through the PIX from the internet and reach the Exchange server. I do see port translation from the PIX logs but the connection times out with no sign of connnectivity. I can telnet to my SMTP from inside the network but not from the outside. I do have the FIX UP SMTP protocol disabled. Is there anything that can look at to help me solve this problem. I am attempting to place the exchange server on the network for Internet e-mail with outlook web access.
Can you send and receive email through the PIX? With the SMTP fixup protocol enabled, you won't be able to telnet to the Exchange server from the outside, but you can usually send and receive SMTP Mail through the PIX. If you have your SMTP server setup to only accept ESMTP, you will have to disable the SMTP Fixup rule, since the PIX does not understand ESMTP.
OWA should work as long as port 80 is open for the Exchange server.
I am sending but not receiving smtp mail. I wanted to try and use telnet to port 25 on the pix to see if my problem was on the pix or on my exchange server. My sense is that this could be a routing issue on my pix. Any thoughts on how to test and verify that?
It is hard to test an Exchange Server behind a PIX. I have never been able to telnet to an Exchange Server behind a PIX, even when it is sending and receiving mail. What does a show ip route generate. PIX's usually only have entries for each interface, and the default route (if set). Can you ping the Exchange Server from the PIX? If you can paste your config file, we may be able to see something from it.
My problem is fixed, I basically did 2 things. I issued no fixup portocol 25, and I found in my default route on the pix I had a typo in the address. I changed those 2 things, rebooted the pix and it began to work. Prior to these 2 changes I was seeing a translation slot to port 25 when I telnetted to my mail server so I was pretty sure that was working. I captured some packetts at my exchange server and that proved to me that the traffic was getting to my server, and being routed back through the pix because of the icmp redirects from in the capture. So that made me think to look at routing on my pix. I am also puzzled by the fact that out bound was working. The tough part of this problem was figuring out how to trouble shoot it to see where it was dying. Anyway thankyou so much for the help.
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We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...