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Topic: IMAP Upload Error

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bara
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Newbie

Joined: 26 January 2011
Location: United Kingdom
Online Status: Offline
Posts: 4

Posted: 26 January 2011 at 2:57pm \| IP Logged

Hi,

I'm currently using a trial version of the .Net IMAP Client in an application
I'm developing. Its been working very well apart from one error I keep getting
when trying to upload a message.

The destination server is Exchange 2010 running the latest patches. I enabled
the log and got the below:

Quote:

[22:46:23.81] [SEND] MBN00000021 APPEND "INBOX" (\Seen) "23-Feb-2009 10:32:47
+0000" {16401+}\r\n
[22:46:23.81] [SEND] Received: from psmtp.com (207.126.144.181) by
pico.corleone.me.u ... size:612.0pt 792.0pt;\r\n margin:72.0pt 72.0pt
72.0pt 72.0pt;}\r\ndi [Data chunk of 8192 bytes sent.]
[22:46:23.81] [SEND] v.Section1\r\n {page:Section1;} \r\n-->\r\n</style><!--
[if gte mso 9]>< ... >\r\n</html>\r\n\r\n--
_000_C511438CDC161C41B3C47B91D99ABA8D0245CD95UKE [Data chunk of 8192 bytes
sent.]
[22:46:23.82] [SEND] \r\n
[22:46:44.36] [INFO] Error: IOException occurred. InnerException message
follows: Unable to read data from the transport connection: A connection attempt
failed because the connected party did not properly respond after a period of
time, or established connection failed because connected host has failed to
respond.

I've tried a number of times and pretty confident there is not a connection
problem (or timeout issue). Any other thoughts?

Thanks,

Bara

Alex
AfterLogic Support

Joined: 19 November 2003
Online Status: Offline
Posts: 2206

Posted: 27 January 2011 at 5:25am \| IP Logged

First, it's not clear which version of MailBee.NET.dll is being used. Make sure you're on the latest version from http://www.afterlogic.com/updates/mailbee_net_2.zip
You will see that the build number is newer in the Assembly version line in the log.

If this does not help, try Imap.UploadMessage overload with (MailMessage, String, String, String, Boolean, UidPlusResult) parameters and set batchMode to false. This will disable LITERAL+ IMAP extension.

Also, you may try to increase timeout to 40 seconds (Imap.Timeout = 40000). For instance, with SMTP, Exchange 2010 may sometimes return its reply after 30 seconds. Maybe, something like that may occur with their IMAP as well.

Regards,
Alex

bara
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Newbie

Joined: 26 January 2011
Location: United Kingdom
Online Status: Offline
Posts: 4

Posted: 27 January 2011 at 9:02am \| IP Logged

Thanks for the information.

I updated to the latest release (I was running something very close) but that
didn't resolve the issue. As my program is doing a lot of uploads I was pretty
sure it wasn't an upload issue but I tried your method in any case. Tried to
increase the timeout value. No luck.

I identified the message that was causing the failure and moved it to another
folder within the same IMAP mailbox and the script still failed when it got to
that message. I then moved it out to a local store and from the local store
copied it back in and it then uploaded successfully.

So, the good new is that it looks like it was some sort of corrupt message. The
bad news is that my Outlook and Thunderbird clients were able to copy the
original message from the IMAP mailbox and upload it when I moved it.

Alex
AfterLogic Support

Joined: 19 November 2003
Online Status: Offline
Posts: 2206

Posted: 27 January 2011 at 9:58am \| IP Logged

I don't get it. Append is always performed between a local storage and an IMAP folder. You can't upload from one IMAP folder to another, that's copy, not upload.

To let us check what's going on there, please make a short sample which reads the problem message from the file and uploads it to the server (so that the error occurs) and send us the script and the file (make sure you've specified the valid credentials and the server name). Use Support / Request Support section on our web site to post this.

Regards,
Alex

bara
Newbie
Newbie

Joined: 26 January 2011
Location: United Kingdom
Online Status: Offline
Posts: 4

Posted: 28 January 2011 at 1:11am \| IP Logged

Interesting, when saving to a file I don't get the same issue it seems. I have
written a very simple test project to demonstrate the issue.

I've cleared out all other email items from the source IMAP mailbox. The
demonstration tried to download the message from one source server and then
upload it to another and that is when the error occurs.

I'm more than happy to continue testing if you want. I have submitted a support
request with a test Visual Studio project which should demonstrate the issue.

The copy process I was referring to was copying between two different IMAP
mailboxes (rather than within a mailbox).

Thanks

Alex
AfterLogic Support

Joined: 19 November 2003
Online Status: Offline
Posts: 2206

Posted: 28 January 2011 at 7:47am \| IP Logged

Thanks for the test project. The problem is now solved. Try this:
http://www.afterlogic.com/updates/mailbee_net_2.zip

bara
Newbie
Newbie

Joined: 26 January 2011
Location: United Kingdom
Online Status: Offline
Posts: 4

Posted: 28 January 2011 at 7:52am \| IP Logged

Hi Alex,

Spot On. Thanks.

Just to let you know I've been very impressed with your support and components
that I'll be buying it over the weekend.

Bara

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