I have an email server behind a UC540. I have turned on firewall set to MIN.
Once I did that i started to have an issue with my mail flow with error firewall #500
after doing some research I see that is a common probem with Cisco PIX firewalls.
Can anyone tell me how to disable this on the UC 540?
see links for docs i found below:
http://support.microsoft.com/kb/320027
https://support.appriver.com/KB/a238/cisco-pixasa-mailguard.aspx