Problem with duplicate email on SmarterMail 14.5.5871

Problem reported by Iacovos Zachariades - 2/25/2016 at 10:27 AM

Submitted

Since a recent upgrade to SmarterMail 14.5.5871, several users are complaining about receiving some messages several times. The users are all in the same domain, downloading messages with POP3, and not leaving messages on the server. I've compared some of the duplicate message headers of the received messages, and they appear to be identical. The disconcerting part of this is that it only seems to affect a few people, and I can't see anything obvious in the logs. Any ideas?

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Matt Petty Replied

2/25/2016 at 10:31 AM

Employee Post

You may want to evaluate this post.
https://portal.smartertools.com/community/a87506/microsoft-outlook-2016-2-23-2016-update-16_0_6528_1011-pop-mail-warning.aspx
Seems like it may be related.

Matt Petty Senior Software Developer SmarterTools Inc. www.smartertools.com

Iacovos Zachariades Replied

2/25/2016 at 12:06 PM

Thanks for the heads up. This may indeed be related. I have had a few reports of messages deleted as well as other people reporting the duplicates, but I hadn't connected them to the same thing, yet.

Iacovos Zachariades Replied

2/25/2016 at 12:26 PM

Each of the users having the problems is running Oultook 2016.

Sérgio Rocha Replied

10/24/2016 at 5:46 AM

I we are with the same problem, duplicate email on receive and send of same message several times.

Sérgio Rocha Replied

10/24/2016 at 11:00 AM

Hi,

We found the common problem in the all mailboxes with repeated messages:

[2016.10.24] 16:24:35 [17000] Add message to mailbox call failed. Reason: Access to the grp file is locked

[2016.10.24] 16:24:35 [17000] Delivery attempt to XXX@xxxx.com to folder 'Inbox' failed. Mailbox is locked

Can anyone on ST let us know what is creating this lock problem?

Regards,

Sérgio Rocha Replied

11/7/2016 at 11:57 AM

Hi,

With the help of Von-Austin See we found the duplication problem.

We discover that the anti-virus (mostly) Kaspersky during the interception of communications between Outlook and server don't send back the server command that inform that the message data was received.

The way we resolve the problem on client with this defected antivirus version, was configure the outlook to use SSL connection. This way outlook communicate directly with server and receive all server commands.

Regards,

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