Windows server 2008 r2 outgoing smtp

Hello

I have a dell t300 running windows server 2008 R2. It is running Hyper-v, also manage a virtual machine running windows server 2008 r2 with exchange 2010 sp1.

Everything was fine, then all of a sudden, over the weekend, outgoing calls to port 25 have stopped working on the virtual machine.  I can use Explorer (port 80) ok but nothing to the port 25 stops - it's as if the firewall blocks but I don't see where.  I try to call port 25 on various other hosts using telnet and it does NOT work

The physical host works very well to port 25, as do all systems on my network, so the problem lies in the implementation of windows server 2008 r2 in the virtual machine somehow.  I have another virtual machine running windows XP on the same host and that is called fine ut using telnet to the virtual network bridge is not the problem either. I'm guessing that the firewall or a corruption of the tcp stack sort

I ' LD be grateful for clues about where to look because email system has continued to send him and it's a major pain.

Thank you

Hi, Ive answered my own post!  turns out the problem be mcafee that is running on the server. It was blocking the outgoing mail that he had detected an apparent threat. Unfortunately, it didn't say clearly that he had done this.

In any case, the deactivation of this area of mcafee has solved the problem. all I have to do now is to discover the threat!

Tags: Windows

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