[OPLINTECH] Exchange 2010 mystery

[Josh Proffit]

I've been spamming mxtoolbox for going on two days now and it kept responding that my mx records were great. (was only trying to resolve the exchange server's FQDN and/or IP) But, the after the 100th time I typed in our domain name...I finally saw it, staring @ me the whole time was lickingcountylibrary.info was resolving to a private IP. With that being said,  it was a DNS issue. I fixed the PTR and everyone got flooded with a day's worth of stuck email. Awesome. Thanks to all of you for the help, you've all been a huge help.

Joshua Proffit
System Administrator
Head of Information Technology Services
Licking County Library
101 West Main Street
Newark, Ohio 43055
740-349-5586
jproffit at lickingcountylibrary.info<mailto:jproffit at lickingcountylibrary.info>
________________________________
From: Ron Woods [woodsro at oplin.org]
Sent: Wednesday, February 15, 2012 1:24 PM
To: Josh Proffit; oplintech at oplin.org
Subject: RE: [OPLINTECH] Exchange 2010 mystery

Im not an exchange guru, but when something like this comes up…I am thinking it sounds like DNS Issue…are you sure your MX Records are correct?

Checking your mx records would be a good place to start. You can use this tool to check it

http://www.mxtoolbox.com/

punch that domain in there and see what you get. Its worth a shot.


Ron Woods
Computer Services Manager
St. Clairsville Public Library


From: oplintech-bounces at lists.oplin.org [mailto:oplintech-bounces at lists.oplin.org] On Behalf Of Josh Proffit
Sent: Wednesday, February 15, 2012 12:54 PM
To: oplintech at oplin.org
Subject: [OPLINTECH] Exchange 2010 mystery

I have an Exchange 2010 machine giving me some grief… Some external emails are not being received. Only some. The receive connectors are configured for anonymous, etc. etc. I’ve disabled the SPAM filter (Symantec Premium anti-spam) There are no bounce or delay messages of any kind to the original senders, and there is nothing stuck or getting stuck in the queue. The emails being sent just vanish… I’m far from an expert with Exchange but I did configure this box last year after migrating it from an Exchange 2003 box (good times were not had) but ultimately everything has been working great for the past year. This is something that just started within the last 2 days…  Any Exchange masters out there have any thoughts? Exchange server is lclmail.npls.org if anyone is interested. Thanks.

Joshua Proffit
System Administrator
Head of Information Technology Services
Licking County Library
101 West Main Street
Newark, Ohio 43055
740-349-5586
jproffit at lickingcountylibrary.info<mailto:jproffit at lickingcountylibrary.info>