Out of curiosity what are you using for spam/filtering/AV, I've seen updates do weird things to the way Exchange is presented.
John W. Cook Director of Network Operations Partnership for Strong Families Micheal Espinola Jr <[email protected]> wrote: Do your tested results show anything different on this site? http://www.blacklistalert.org/ -- Espi On Tue, Oct 7, 2014 at 1:02 PM, Steve Ens <[email protected]<mailto:[email protected]>> wrote: Yes, already tried that. I can do a MX lookup, but cannot telnet to the server. Also getting this in the logs Error Code: 10061, Error Message: No connection could be made because the target machine actively refused it That seems to point to us being blacklisted, but I come up clean on the mxtoolbox tests. On Tue, Oct 7, 2014 at 2:48 PM, Kennedy, Jim <[email protected]<mailto:[email protected]>> wrote: What are the domains? Could be bad bounces from spam to non-existent domains Your server can not contact them, so it tried alternates either in dns or per the RFC's (for example A record of domain.com<http://domain.com>) and that failed. So it is still trying. Do an MX lookup from your transport server to verify your DNS is working. Then try telnet port 25 from the transport server to that IP to verify connectivity. What do you get? From: [email protected]<mailto:[email protected]> [mailto:[email protected]<mailto:[email protected]>] On Behalf Of Steve Ens Sent: Tuesday, October 7, 2014 3:42 PM To: [email protected]<mailto:[email protected]> Subject: [Exchange] 421 4.2.1 Unable to connect errors Odd errors in my mail queue. Just started appearing yesterday. Most mail gets sent, but from certain domains I get these errors. "Attempted failover to alternate host, but that did not suceed." Anyone see this before? Exchange 2010 on Windows 2008 R2. ________________________________ CONFIDENTIALITY STATEMENT: The information transmitted, or contained or attached to or with this Notice is intended only for the person or entity to which it is addressed and may contain Protected Health Information (PHI), confidential and/or privileged material. Any review, transmission, dissemination, or other use of, and taking any action in reliance upon this information by persons or entities other than the intended recipient without the express written consent of the sender are prohibited. This information may be protected by the Health Insurance Portability and Accountability Act of 1996 (HIPAA), and other Federal and Florida laws. Improper or unauthorized use or disclosure of this information could result in civil and/or criminal penalties. Consider the environment. Please don't print this e-mail unless you really need to.
