topic Problem With Email in Network Security https://community.cisco.com/t5/network-security/problem-with-email/m-p/882621#M969199 <P>I have a PIX 515-E, IOS 6.3(4). </P><P>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?</P> Mon, 11 Mar 2019 11:12:51 GMT mmauriello 2019-03-11T11:12:51Z Problem With Email https://community.cisco.com/t5/network-security/problem-with-email/m-p/882621#M969199 <P>I have a PIX 515-E, IOS 6.3(4). </P><P>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?</P> Mon, 11 Mar 2019 11:12:51 GMT https://community.cisco.com/t5/network-security/problem-with-email/m-p/882621#M969199 mmauriello 2019-03-11T11:12:51Z Re: Problem With Email https://community.cisco.com/t5/network-security/problem-with-email/m-p/882622#M969201 <HTML><HEAD></HEAD><BODY><P>Hi </P><P></P><P>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. </P><P></P><P>This feature is called hairpinning and it is available on pix v7.x.</P><P></P><P>HTH</P><P></P><P>Jon</P></BODY></HTML> Tue, 18 Sep 2007 20:42:09 GMT https://community.cisco.com/t5/network-security/problem-with-email/m-p/882622#M969201 Jon Marshall 2007-09-18T20:42:09Z Re: Problem With Email https://community.cisco.com/t5/network-security/problem-with-email/m-p/882623#M969202 <HTML><HEAD></HEAD><BODY><P>Yes, the default gateways are the interfaces. What's strange is that eth1 server can send to eth2 server, is that normal?</P><P></P><P>I need to upgrade the IOS?</P></BODY></HTML> Tue, 18 Sep 2007 20:45:46 GMT https://community.cisco.com/t5/network-security/problem-with-email/m-p/882623#M969202 mmauriello 2007-09-18T20:45:46Z Re: Problem With Email https://community.cisco.com/t5/network-security/problem-with-email/m-p/882624#M969203 <HTML><HEAD></HEAD><BODY><P>It depends on PIX's configuration.</P></BODY></HTML> Tue, 18 Sep 2007 20:56:21 GMT https://community.cisco.com/t5/network-security/problem-with-email/m-p/882624#M969203 a.alekseev 2007-09-18T20:56:21Z Re: Problem With Email https://community.cisco.com/t5/network-security/problem-with-email/m-p/882625#M969204 <HTML><HEAD></HEAD><BODY><P>Hi </P><P></P><P>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.</P><P></P><P>Could you post the config so we can have a look. </P><P></P><P>Jon</P></BODY></HTML> Wed, 19 Sep 2007 04:00:52 GMT https://community.cisco.com/t5/network-security/problem-with-email/m-p/882625#M969204 Jon Marshall 2007-09-19T04:00:52Z