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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)
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Connection timeout on ASA 5520


I'm wondering if somebody else has experienced similar problem with ASA 5520. We have an e-mail server on inside and spam filter on outside. I have allowed smtp from spam server to e-mail server on inside and www from any outside to e-mail server on inside for OWA plus pop3. I was able to send e-mails, but not to receive. OWA connection was just timing out. It was possible to connect, but in a couple of second the connection was gone. I checked logs on ASA and I'm sure that issue is not the access list. Connection to another server on the same subnet was fine, so the problem wasn't routing either.

I got rid of esmtp inspection and got the same result. The server in question is performing badly, possibly this problem would not occur with a most of regular servers. I'm really curious what possible work around could be others than changing the server.

Thanks for sharing any ideas

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Re: Connection timeout on ASA 5520

Did you ever resolve this issue? I'm having the same problem, but only when using IE. Firefox and Firefox IE plug-in work fine.

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