I have raised this question before - in the context of TBird getting a long delay on running its filters to copy to my local inbox. I had some useful help from 2 people but still unable to get my emails properly from an ISP where TBird has worked fine until 2 weeks ago. Although there *is* a problem with TBIrd getting 'confused' if filters or user move messages to local inbox when the data has not arrived, the main problem with IMAP is not getting data for a message for which the header has been received. I have now run with diagnostics and it seems to show TBird 'giving up' on receiving the data. As I do not understand the detail of the logging, I wonder if someone could be kind enough to advise what is going on - to see if it is a problem at the ISP or with TBird? I cleared down all messages at the ISP and then sent two small messages from my gmail account. These received ok. I then sent a large one with attachment and that timed out on getting data after the header was received. I stopped and restarted TB and seemed to get similar behaviour. The end of the second log is below and I would be very grateful for any advice as to what to try next. And any advice on how to upload a large log if that is useful -- I could load to a neocities site if that helps. 2015-12-12 13:47:38.017000 UTC - 10124[c01a4f0]: ReadNextLine [stream=8a2c740 nb=78 needmore=0] 2015-12-12 13:47:38.017000 UTC - 10124[c01a4f0]: c0e0000:mail.demon.co.uk:S-INBOX:CreateNewLineFromSocket: Oh5r6ba4qlljy2p2KlyBOlYQ8csnkNXCq7dzc+5WNGdbLmveUNypN8Chmdl8cqaOi+O0ZWvUxxZ4 2015-12-12 13:47:38.017000 UTC - 10124[c01a4f0]: ReadNextLine [stream=8a2c740 nb=78 needmore=0] 2015-12-12 13:47:38.017000 UTC - 10124[c01a4f0]: c0e0000:mail.demon.co.uk:S-INBOX:CreateNewLineFromSocket: rfxMa1C0szzXuphT9K0uFjV7ZrezC1JW9bbY1e0cy2ZX4rNgUg/21tia8YOxwWnUgP3mJ0IC35zT 2015-12-12 13:47:38.017000 UTC - 10124[c01a4f0]: ReadNextLine [stream=8a2c740 nb=78 needmore=0] 2015-12-12 13:47:38.017000 UTC - 10124[c01a4f0]: c0e0000:mail.demon.co.uk:S-INBOX:CreateNewLineFromSocket: Wsd7eOX1lDCzEzpDeCk0JDurMTd5QxuJl4iX3RKmMLc21J4K4cq1bUeVfdSJshlCW1htMRBGzkib 2015-12-12 13:49:01.453000 UTC - 0[2f11140]: c0e0000:mail.demon.co.uk:S-INBOX:CONTROL: PSEUDO-Interrupted 2015-12-12 13:49:02.433000 UTC - 0[2f11140]: c0e0000:mail.demon.co.uk:S-INBOX:CONTROL: PSEUDO-Interrupted 2015-12-12 13:49:03.625000 UTC - 0[2f11140]: c0e0000:mail.demon.co.uk:S-INBOX:CONTROL: PSEUDO-Interrupted 2015-12-12 13:49:03.635000 UTC - 0[2f11140]: proposed url = INBOX folder for connection INBOX has To Wait = TRUE can run = FALSE 2015-12-12 13:49:03.635000 UTC - 0[2f11140]: queuing url:imap://[email protected]@mail.demon.co.uk:143/fetch>UID>/INBOX>34288 2015-12-12 13:49:03.635000 UTC - 0[2f11140]: considering playing queued url:imap://[email protected]@mail.demon.co.uk:143/fetch>UID>/INBOX>34288 2015-12-12 13:49:03.635000 UTC - 0[2f11140]: creating protocol instance to play queued url:imap://[email protected]@mail.demon.co.uk:143/fetch>UID>/INBOX>34288 2015-12-12 13:49:03.636000 UTC - 0[2f11140]: proposed url = INBOX folder for connection INBOX has To Wait = TRUE can run = FALSE 2015-12-12 13:49:03.636000 UTC - 0[2f11140]: failed creating protocol instance to play queued url:imap://[email protected]@mail.demon.co.uk:143/fetch>UID>/INBOX>34288 2015-12-12 13:49:49.876000 UTC - 10124[c01a4f0]: ReadNextLine [stream=8a2c740 nb=0 needmore=1] 2015-12-12 13:49:49.907000 UTC - 10124[c01a4f0]: c0e0000:mail.demon.co.uk:S-INBOX:CreateNewLineFromSocket: clearing IMAP_CONNECTION_IS_OPEN - rv = 804b000e 2015-12-12 13:49:49.915000 UTC - 10124[c01a4f0]: c0e0000:mail.demon.co.uk:S-INBOX:TellThreadToDie: close socket connection 2015-12-12 13:49:49.915000 UTC - 10124[c01a4f0]: c0e0000:mail.demon.co.uk:S-INBOX:CreateNewLineFromSocket: (null) 2015-12-12 13:49:49.915000 UTC - 10124[c01a4f0]: c0e0000:mail.demon.co.uk:S-INBOX:STREAM:CLOSE: Abort Message Download Stream 2015-12-12 13:49:49.919000 UTC - 10124[c01a4f0]: c0e0000:mail.demon.co.uk:S-INBOX:ProcessCurrentURL: aborting queued urls 2015-12-12 13:49:49.929000 UTC - 10124[c01a4f0]: c0e0000:mail.demon.co.uk:S-INBOX:SendData: clearing IMAP_CONNECTION_IS_OPEN 2015-12-12 13:49:49.929000 UTC - 10124[c01a4f0]: ImapThreadMainLoop leaving [this=c0e0000]