What might suddenly provoke this poplib error?
MRAB
python at mrabarnett.plus.com
Thu Oct 13 13:35:11 EDT 2022
On 2022-10-13 13:47, Chris Green wrote:
> I have a short python3 program that collects E-Mails from a 'catchall'
> mailbox, sends the few that might be interesting to me and dumps the
> rest.
>
> It has suddenly (after working for some years) started throwing the
> following:-
>
> Traceback (most recent call last):
> File "/home/chris/.mutt/bin/getCatchall.py", line 83, in <module>
> pop3.pass_('brzmilla')
> File "/usr/lib/python3.10/poplib.py", line 218, in pass_
> return self._shortcmd('PASS %s' % pswd)
> File "/usr/lib/python3.10/poplib.py", line 181, in _shortcmd
> return self._getresp()
> File "/usr/lib/python3.10/poplib.py", line 157, in _getresp
> raise error_proto(resp)
> poplib.error_proto: b'-ERR internal server error'
>
>
> The section of code throwing the error is as follows:-
>
> #
> #
> # Connect to the POP3 server, get message count, exit if no messages
> #
> for t in range(10): # retry 10 times
> try:
> pop3 = poplib.POP3_SSL('mail3.gridhost.co.uk',timeout=300)
> break
> except TimeoutError:
> if t == 9:
> log.err("Timed out 10 times, giving up")
> exit(1)
> else:
> log.warn("Timed out, try " + str(t))
>
> pop3.user('catchall at isbd.net')
> pop3.pass_('brzmilla')
> numMessages = len(pop3.list()[1])
> if (numMessages == 0):
> break
>
>
> It seems to be saying that the POP3 server has a problem, if so there's not
> much I can do about it as it's my hosting provider's mail server. Is it
> really saying the server has a problem?
>
As you've already ascertained that it's a server error, I'd just like to
suggest that you add a sleep before retrying. If it has timed out after
5 minutes, I doubt there's much point in retrying immediately.
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