[Users] [Bug 4423] New: goes to lunch on POP3 retrieval of Yahoo msgs

[noreply at thewildbeast.co.uk]

https://www.thewildbeast.co.uk/claws-mail/bugzilla/show_bug.cgi?id=4423

            Bug ID: 4423
           Summary: goes to lunch on POP3 retrieval of Yahoo msgs
           Product: Claws Mail
           Version: 3.17.3
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: major
          Priority: P3
         Component: POP3
          Assignee: users at lists.claws-mail.org
          Reporter: juhuseq at boximail.com

Claws Mail goes to lunch on an initial POP3 download of over 50,000 msgs.  On
the 1st attempt, the count of fetched messages reached just 184 before the
Claws Mail window went completely white.  Firefox was running at the same time
with no issue.  The /top/ command showed claws-mail was using 0.0 cpu.  I let
is sit for a couple hours like that, and the UI never recovered from the white
window.  So I killed it.

The 2nd time I tried launching this way: ionice -c 2 -n 6 claws-mail

That didn't help.  It went to lunch after 88 msgs were fetched.  So I killed it
and restarted this way: claws-mail --debug.  That time not a single msg was
fetched.  It went to lunch at about this point:

------8<---------
* Account 'yahoo - POP3': Connecting to POP3 server: pop.mail.yahoo.com:995...
...
[14:58:43] POP3< +OK hello from jpop-0.1 
[14:58:43] POP3> USER XXXXX at yahoo.com
[14:58:44] POP3< +OK password required.
[14:58:44] POP3> PASS ********
[14:58:44] POP3< +OK maildrop ready, (JPOP server ready)
[14:58:44] POP3> STAT
[14:58:46] POP3< +OK 59093 3869756552
[14:58:46] POP3> UIDL
[14:58:47] POP3< +OK 59093 message(s) (3969756552 octets)
------8<---------

Normally the next step is to send the LIST command, but on this 3rd attempt it
doesn't get that far.  I should also mention that this is over a normal WAN
(not Tor since Yahoo won't let Tor users authenticate).

4th attempt: ran with --debug but minimized the GUI (to rule out a
malfunctioning animation like the status bar - some apps do better in the
background).  ATM it has passed RETR 1000, and it's still running.

This bug could be related:

https://www.thewildbeast.co.uk/claws-mail/bugzilla/show_bug.cgi?id=2629

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