Re: Gmail pop3 failing since yesterday

Am Montag, den 20.04.2020, 13:00 -0600 schrieb Charles Cazabon:
> Tory S. Anderson <[email protected]> wrote:
> > Has anyone else experienced issues with gmail pop3 recently? I have
> > one of
> > my gmail addresses failing since yesterday, receiving the error
> > from
> > getgmail:
> [...]
> > > Retrieval error: server for
> > > SimplePOP3SSLRetriever:recent:<<myaddress>@[
> > > [email protected]]:995
> > > is broken; offered message GmailId1718e4039279f0fe but failed to
> > > provide
> > > it.  Please notify the administrator of the server.  Skipping
> > > message...
> 
> This is a nonfatal error.  getmail is warning you that the server -
> it can
> happen with POP3 or IMAP - included a message in the mailbox contents
> listing,
> but when getmail tried to actually retrieve that message, the server
> responded
> with "no such message with that ID".
> 
> The server is broken.  getmail will happily let you continue using
> it.  If you
> can somehow convince the server to stop including the phantom message
> in its
> list of the messages in the mailbox, the error message will go
> away.  Please
> contact your email provider for further help with this.

The server isn't necessarily broken. I've had this problem with a
server (Dovecot) and TWO clients which both accessed the same mailbox.
Both tried to download messages with IMAP IDLE, but it should be the
same with POP3. It could happen that one downloaded and erased a
message while the other wasn't done with the same message. It's a race
condition. 

The problem went away when I deactivated one of the two listeners.

The actual issue here is, that the IMAP protocol doesn't discriminate
non-existent message-IDs from expired message-IDs.

Happy hacking,
Volker