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Why has thunderbird/comcast imap started to time out?

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  • Last reply by Matt

gwstern
gwstern
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On our Windows computer Thunderbird has always had an issue where it would pop up a message saying "Could not connect to mail server imap.comcast.net, the connection was refused". A few hours or days would go by and Thunderbird and Comcast would talk to each other again. I finally had some time to try and debug this and (of course) I couldn't get the error to reproduce but instead I kept getting an imap timeout error. I captured the error message but it doesn't tell me why it's timing out or what to do about it.

P.S. Yes, I increased the timeout value from 100 to 300 and now it simply takes longer

Details: Windows 10 Home 22H2 Thunderbird 128.3.1esr

Error log: ImapClient.sys.mjs:887:18 19:23:29.582 mailnews.imap.4: NotifyBodysToDownload Array [] ImapClient.sys.mjs:1866:18 19:23:29.582 mailnews.imap.4: GetRunningUrl ImapClient.sys.mjs:1872:18 19:23:29.582 mailnews.imap.4: Done with status=0 ImapClient.sys.mjs:1851:18 19:23:29.583 mailnews.imap.4: C: 51 IDLE ImapClient.sys.mjs:962:20 19:23:29.583 mailnews.imap.4: Idling in imap://<email>@imap.comcast.net/Drafts ImapClient.sys.mjs:829:18 19:23:29.736 mailnews.imap.4: S: + idling

ImapClient.sys.mjs:887:18 19:23:29.820 mailnews.imap.5: Connecting to imap.comcast.net:993 ImapClient.sys.mjs:111:20 19:23:29.933 mailnews.imap.5: Connected ImapClient.sys.mjs:862:18 19:23:30.152 mailnews.imap.5: S: * OK [CAPABILITY IMAP4rev1 SASL-IR LOGIN-REFERRALS ID ENABLE IDLE LITERAL+ AUTH=PLAIN AUTH=LOGIN AUTH=OAUTHBEARER AUTH=XOAUTH2] Dovecot ready.

ImapClient.sys.mjs:887:18 19:23:30.152 mailnews.imap.5: Possible auth methods: PLAIN,LOGIN ImapClient.sys.mjs:1067:18 19:23:30.152 mailnews.imap.5: C: 12 AUTHENTICATE PLAIN ImapClient.sys.mjs:962:20 19:23:30.237 mailnews.imap.5: S: +

ImapClient.sys.mjs:887:18 19:23:30.238 mailnews.imap.5: C: Logging suppressed (it probably contained auth information) ImapClient.sys.mjs:956:20 19:23:30.671 mailnews.imap.5: S: 12 OK [CAPABILITY IMAP4rev1 SASL-IR LOGIN-REFERRALS ID ENABLE IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS THREAD=ORDEREDSUBJECT MULTIAPPEND URL-PARTIAL CATENATE UNSELECT CHILDREN NAMESPACE UIDPLUS LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS BINARY MOVE SNIPPET=FUZZY PREVIEW=FUZZY PREVIEW STATUS=SIZE SAVEDATE XDOVECOT LITERAL+ NOTIFY SPECIAL-USE QUOTA] Logged in

ImapClient.sys.mjs:887:18 19:23:30.671 mailnews.imap.5: C: 13 ID ("name" "Thunderbird" "version" "128.3.1") ImapClient.sys.mjs:962:20 19:23:30.820 mailnews.imap.5: S: * ID ("name" "Dovecot")

13 OK ID completed (0.001 + 0.000 secs).

ImapClient.sys.mjs:887:18 19:23:30.822 mailnews.imap.5: updateFolderStatus imap://<email>@imap.comcast.net/Sent ImapClient.sys.mjs:719:18 19:23:30.822 mailnews.imap.5: C: 14 STATUS "Sent" (UIDNEXT MESSAGES UNSEEN) ImapClient.sys.mjs:962:20 19:23:30.968 mailnews.imap.5: S: * STATUS Sent (MESSAGES 0 UIDNEXT 210410 UNSEEN 0)

14 OK Status completed (0.001 + 0.000 secs).

ImapClient.sys.mjs:887:18 19:23:30.969 mailnews.imap.5: Done with status=0 ImapClient.sys.mjs:1851:18 19:23:43.262 mailnews.imap.2: S: * OK Still here

2 ImapClient.sys.mjs:887:18 19:24:34.718 mailnews.imap.1: NetworkTimeoutError: a Network error occurred ImapClient.sys.mjs:914:18 19:24:35.805 mailnews.imap.0: NetworkTimeoutError: a Network error occurred ImapClient.sys.mjs:914:18 19:24:35.805 mailnews.imap.0: Done with status=2152398862 ImapClient.sys.mjs:1851:18 19:24:35.806 mailnews.imap.0: Connection closed. ImapClient.sys.mjs:944:18 19:24:37.349 mailnews.imap.1: Done with status=2152398862 ImapClient.sys.mjs:1851:18 19:24:37.349 mailnews.imap.1: Connection closed. ImapClient.sys.mjs:944:18 19:24:45.486 Unknown property ‘-moz-border-radius’. Declaration dropped. codemirror.css:244:22

On our Windows computer Thunderbird has always had an issue where it would pop up a message saying "Could not connect to mail server imap.comcast.net, the connection was refused". A few hours or days would go by and Thunderbird and Comcast would talk to each other again. I finally had some time to try and debug this and (of course) I couldn't get the error to reproduce but instead I kept getting an imap timeout error. I captured the error message but it doesn't tell me why it's timing out or what to do about it. P.S. Yes, I increased the timeout value from 100 to 300 and now it simply takes longer Details: Windows 10 Home 22H2 Thunderbird 128.3.1esr Error log: ImapClient.sys.mjs:887:18 19:23:29.582 mailnews.imap.4: NotifyBodysToDownload Array [] ImapClient.sys.mjs:1866:18 19:23:29.582 mailnews.imap.4: GetRunningUrl ImapClient.sys.mjs:1872:18 19:23:29.582 mailnews.imap.4: Done with status=0 ImapClient.sys.mjs:1851:18 19:23:29.583 mailnews.imap.4: C: 51 IDLE ImapClient.sys.mjs:962:20 19:23:29.583 mailnews.imap.4: Idling in imap://<email>@imap.comcast.net/Drafts ImapClient.sys.mjs:829:18 19:23:29.736 mailnews.imap.4: S: + idling ImapClient.sys.mjs:887:18 19:23:29.820 mailnews.imap.5: Connecting to imap.comcast.net:993 ImapClient.sys.mjs:111:20 19:23:29.933 mailnews.imap.5: Connected ImapClient.sys.mjs:862:18 19:23:30.152 mailnews.imap.5: S: * OK [CAPABILITY IMAP4rev1 SASL-IR LOGIN-REFERRALS ID ENABLE IDLE LITERAL+ AUTH=PLAIN AUTH=LOGIN AUTH=OAUTHBEARER AUTH=XOAUTH2] Dovecot ready. ImapClient.sys.mjs:887:18 19:23:30.152 mailnews.imap.5: Possible auth methods: PLAIN,LOGIN ImapClient.sys.mjs:1067:18 19:23:30.152 mailnews.imap.5: C: 12 AUTHENTICATE PLAIN ImapClient.sys.mjs:962:20 19:23:30.237 mailnews.imap.5: S: + ImapClient.sys.mjs:887:18 19:23:30.238 mailnews.imap.5: C: Logging suppressed (it probably contained auth information) ImapClient.sys.mjs:956:20 19:23:30.671 mailnews.imap.5: S: 12 OK [CAPABILITY IMAP4rev1 SASL-IR LOGIN-REFERRALS ID ENABLE IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS THREAD=ORDEREDSUBJECT MULTIAPPEND URL-PARTIAL CATENATE UNSELECT CHILDREN NAMESPACE UIDPLUS LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS BINARY MOVE SNIPPET=FUZZY PREVIEW=FUZZY PREVIEW STATUS=SIZE SAVEDATE XDOVECOT LITERAL+ NOTIFY SPECIAL-USE QUOTA] Logged in ImapClient.sys.mjs:887:18 19:23:30.671 mailnews.imap.5: C: 13 ID ("name" "Thunderbird" "version" "128.3.1") ImapClient.sys.mjs:962:20 19:23:30.820 mailnews.imap.5: S: * ID ("name" "Dovecot") 13 OK ID completed (0.001 + 0.000 secs). ImapClient.sys.mjs:887:18 19:23:30.822 mailnews.imap.5: updateFolderStatus imap://<email>@imap.comcast.net/Sent ImapClient.sys.mjs:719:18 19:23:30.822 mailnews.imap.5: C: 14 STATUS "Sent" (UIDNEXT MESSAGES UNSEEN) ImapClient.sys.mjs:962:20 19:23:30.968 mailnews.imap.5: S: * STATUS Sent (MESSAGES 0 UIDNEXT 210410 UNSEEN 0) 14 OK Status completed (0.001 + 0.000 secs). ImapClient.sys.mjs:887:18 19:23:30.969 mailnews.imap.5: Done with status=0 ImapClient.sys.mjs:1851:18 19:23:43.262 mailnews.imap.2: S: * OK Still here 2 ImapClient.sys.mjs:887:18 19:24:34.718 mailnews.imap.1: NetworkTimeoutError: a Network error occurred ImapClient.sys.mjs:914:18 19:24:35.805 mailnews.imap.0: NetworkTimeoutError: a Network error occurred ImapClient.sys.mjs:914:18 19:24:35.805 mailnews.imap.0: Done with status=2152398862 ImapClient.sys.mjs:1851:18 19:24:35.806 mailnews.imap.0: Connection closed. ImapClient.sys.mjs:944:18 19:24:37.349 mailnews.imap.1: Done with status=2152398862 ImapClient.sys.mjs:1851:18 19:24:37.349 mailnews.imap.1: Connection closed. ImapClient.sys.mjs:944:18 19:24:45.486 Unknown property ‘-moz-border-radius’. Declaration dropped. codemirror.css:244:22

All Replies (1)

Matt
Matt
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  • Top 10 Contributor
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There is nothing in that log to indicate anything but a successful IMAP login followed by a timeout when the system is asked for mail.

My guess is you have a defective antivirus product.

If it was a router issue you would not authenticate. If it was an encryption TLS type issue, again you would not authenticate. The server is indication is has a "next mail" and provided the reference.

SO I am guessing the antivirus is intercepting the message and going off to la la land. So try disabling the mail scanner and see if that helps.

Helpful?

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