DAG Sendmail issues 4 days after DAG creation

Have had Exchange 2013 running on a Virtual machine for a couple of months now without issues other than some serious throttling issues we bypassed exchange and resolved.

I installed a second Exchange 2013 server on a physical server and Created an active passive DAG on Sunday the 18th.  Everything tested as far as email flowing inbound and outbound, both plain text and through our ZIX server.

On Thursday the 23rd, everyone in the company received a certificate warning when logging into outlook any versin.

At the same time, noticed that any job from any of our 4 job servers that had email tasks going through the exchange server also failed with the following error.

Source: Send Duplicate Attempt Send Mail Task     Description: An error occurred with the following error message: "Service not available, closing transmission channel. The server response was: 4.3.2 Service not available".

We drained the Physical Exchange server queues and powered it down, no more certificate errors, and no more jobs failing.

Not sure where to begin looking.
  • Edited by timwtaylor Wednesday, July 29, 2015 4:16 PM
July 29th, 2015 4:15pm

So, If I go to the first server, generate a key request, take that to go-daddy and have them re-issue a key, when they do, and I import it, there will be somewhere to make the private key exportable.  Make sure I do that, and then re-import the key to the new server. 

If I do that, will not all the outlook clients need to re-install the key, or will they trust it because it is not self signed?
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August 7th, 2015 3:17pm

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