Gordon Messmer wrote:
Michael Nguyen wrote:
So, our CEO is getting an intermittent login failure and I'm not sure
how to track it down. I checked the logs and I see entries like this
that coincide with his complaints:
Jun 18 21:16:00 web05 imapd: LOGIN FAILED, user=THE_CEO,
ip=[::ffff:10.8.167.140]
Now, what makes these entries so odd is that there are no corresponding
logs for authdaemond.
Are there any other errors from imapd? Perhaps the queue for authdaemon
is full and imapd can't connect. If that were the case, you'd want to
find out how long your queries are taking, and whether or not you can
speed that up.
[snip]
I greatly appreciate your writing, Gordon. The only thing about this is
that I think I've seen what you're talking about (the queue being
full). When I've seen this, I get "Input/output" errors from Courier
IMAP. This is always fixed by either:
- Increasing threads
- Adding another Courier IMAP/Authlib front end proxy to the load balancer
- Fixing the database problem ;-)
I think this problem is different and it seems to be only happening to
this user. Also, there are no other errors from imapd when this happens.
Michael
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