skeatingMemberOct 22, 2015 at 7:48 am #165904
I am trying to connect both inbound and outbound email from the Barracuda Email Security System to my Exchange 2010 server. Currently my Cisco 515 PIX has these two rules, which I believe are allowing mail in and out:
XXX.XXX.XX.XX is the public IP for my Exchange server.
access-list BORDER35 permit tcp any host XXX.XXX.XX.XX eq smtp
static (inside,outside) tcp XXX.XXX.XX.XX smtp Exchange Server NAME smtp netmask 255.255.255.255 0 0
access-list SMTP-OUT-I permit tcp host Exchange Server NAME any eq smtp
I have no problem sending or receiving email.
When I attempt to change the first rule to the following:
access-list BORDER35 permit tcp 188.8.131.52 255.255.240.0 eq smtp host XXX.XXX.XX.XX eq smtp
I cannot receive email sent from an external email account. When I go into Barracuda, it shows the email there, with this message:
Recipients Action Reason Delivery Status
Email Address Allowed Spooled (XXX.XXX.XX.XX:451 No response to HELO/EHLO)
I also cannot do a telnet to the outbound server: telnet dXXXXX.o.ess.barracudanetworks.com 25.
So my questions are, 1. What rules do I need (or revisions of the ones I have) in order to send and receive from Barracuda. 2. How do I open port 25 so I can telnet to the outbound server?
I realize these maybe Cisco 101 questions, and I have researched this on the web, but I am getting nowhere at present. I appreciate any help.
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