Question:
I need to troubleshoot some lost email. Where can I start?

Answer:
Look at the log file to see if anything has come from this domain recently. You can also do an MX lookup to get the IP address of the mail server and search for connections from this mail server's IP address.

Do you have a subject line or something else that can help track down this message?

We have seen this type of problem when two domains used to share a mail server and one migrated off. If the domain configuration and mailboxes were never deleted from the old mail server then any e-mail sent to the old mail server would be placed directly into the old mailboxes and never forwarded on to the new mail server.

We have also seen problems when a domain moves DNS servers and the records are never removed from the old DNS servers. It can cause similar problems to the one mentioned above but usually results in a bounce message.

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