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01.29.2008 at 03:38PM PST, ID: 23121255
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7.8

1 T1 line, 2 public ips, 2 email servers, 2 domain names, 2 pix 501s, bad communication between servers

Asked by mstefani in Network Routers, Cisco PIX Firewall

Tags:

I have 2 companies on the same T1 line, they each have their own domain name and win2k3 sbs servers hosting email separately.  Sometimes, email does not get delivered to the other server and times out, sometimes it works perfect.  no rhyme or reason.  Scenario:

server1 is connected to a pix501 with public ip of 12.34.56.162 and domain is domain1.com.
server2 is connected to a pix501 with public ip of 12.34.56.164 and domain is domain2.com.

The T1 has 5 ips and uses a cisco 1720 as it's router with ip 12.133.12.161 which is the gateway for both pix's.

If a user from domain1.com sends an email to a user on domain2.com, the message will sit in the exchange queue until it times out.  If the same user sends the message again the next day, it gets delivered to the other server in milliseconds.

Neither server has any trouble sending email to any other domains.   If it was consistent, I would say that the 1720 could not send the traffic out and receive it back in to the other IP, but it is very sporatic.  Short of setting up a vpn between the pix 501s, does anyone have any ideas on how to make this work?
thanks, MikeStart Free Trial
 
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[+][-]01.29.2008 at 03:45PM PST, ID: 20773526

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[+][-]01.29.2008 at 03:50PM PST, ID: 20773542

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[+][-]01.29.2008 at 04:38PM PST, ID: 20773788

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[+][-]01.29.2008 at 08:42PM PST, ID: 20774718

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[+][-]01.30.2008 at 04:53PM PST, ID: 20783076

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About this solution

Zones: Network Routers, Cisco PIX Firewall
Tags: networking
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Solution Provided By: mstefani
Participating Experts: 2
Solution Grade: A
 
 
 
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