Dovecot does not close connections

[Steffen Kaiser]

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On Fri, 14 Oct 2016, Benedikt Carda wrote:

> I am running into this error:
> /Maximum number of connections from user+IP exceeded
> (mail_max_userip_connections=10)/
>
> The suggested solution in hundreds of support requests on this mailing
> list and throughout the internet is to increase the number of maximum
> userip connections. But this is not curing the problem, it is just
> postponing it to the moment when the new limit is reached.
>
> When i type:
> /doveadm who//
> /
>
> I can see that some accounts have several pids running:
> /someaccount       10 imap  (25396 25391 25386 25381 25374 7822 7817
> 5559 5543 5531) (xxx.xxx.xxx.xxx)/
>
> Now when I check these pids with
> /ps aux/
>
> I find out that the oldest pid (5531) has a lifetime of already over 12
> hours. Anyway I know that the clients that initiated the connections are
> not connected anymore, so there is no way that there is a valid reason
> why this connection should still be open.

What's the state of the connection ?


- -- 
Steffen Kaiser
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