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Got to work this morning and discovered that all email sent outside of our local domain has been residing in the spool since late Friday afternoon.
Trying to troubleshoot in the logs...strange thing is occurring. All messages show an attempt to connect to 18.104.22.168, and the connection times out.
We use third party outgoing gateways to send our email through. These servers provide Zix encryption for any message containing PHI (protected health information). Neither of the servers we send through are on the above IP, nor anything close.
I did disable the outgoing gateways to see if this made a difference and it does not. All messages remain in the spool. I have restarted the SM service, restarted the server...no difference. Running version 14.2.5711.
Anyone seen anything like this?