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Step-by-Step Configuration and Troubleshooting Best Practices for the NGFW, NGIPS and AMP Technologies A Visual Guide to the Cisco Firepower Threat Defense (FTD)
New Member

Problem With Email

I have a PIX 515-E, IOS 6.3(4).

I have two networks set up behind it on eth1 and eth2. Both networks have their own email servers (Exchange 2003). The network on eth2 can't send email to the server on eth1, and can't telnet to port 25, can't even ping the email server on eth1. Any idea why?

4 REPLIES
Hall of Fame Super Blue

Re: Problem With Email

Hi

Are the default gateways for the mail servers the pix interfaces ?. If so this will not work with pix ver 6.x as the pix cannot route traffic back out the same interface it was received on.

This feature is called hairpinning and it is available on pix v7.x.

HTH

Jon

New Member

Re: Problem With Email

Yes, the default gateways are the interfaces. What's strange is that eth1 server can send to eth2 server, is that normal?

I need to upgrade the IOS?

Hall of Fame Super Blue

Re: Problem With Email

Hi

Sincere apologies, i had a bit of a "moment" when answering your question. It has nothing to do with hairpinning as it goes in and out on different interfaces.

Could you post the config so we can have a look.

Jon

Re: Problem With Email

It depends on PIX's configuration.

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