Duplicate Emails

Our users occassionally receive duplicate emails. It happens intermittenly and sometimes it can be reproduced. It seems to be all external emails. Those that are able to be reproduced will eventually go away and then they could come back. It only happens with incoming email, we haven’t heard of anyone complaining about outgoing email.

Please let me know if you have any suggestions. Thank you!!!

Subject: are they duplicated before or after you receive them?

Check your logs and/or message tracking. You’re looking for the point when the message actually hits your server. Determine if you have actually received two copies of the message, or if you only received one and it was duplicated later on your server.

If you are receiving two copies, then the problem is on the sender’s end. The things which come to mind:

  1. the sender actually sent two copies (often they made a small change, or forgot to cc someone, so they sent it again with the correction)

  2. I have seen this with senders with little bandwidth - their server starts to send, it doesn’t receive the part of the packet which tells it that the message was sent successfully, so it resends it. I mostly saw this back in the late '90s, but I suppose it can still happen.

  3. There is some problem on the sender’s server causing the duplicates.

If it is happening on your end, then keep looking through those logs to see when the second copy comes into existence. I would suspect there is a third-party product involved, such as antivirus. You might want to call Lotus Support for assistance.