lmtp timeout, locks and crashes

[Teemu Huovila]

On 15.03.2016 12:29, Aki Tuomi wrote:
> 
> 
> On 15.03.2016 12:28, Tom Sommer wrote:
>>
>> On 2016-03-15 10:53, Tom Sommer wrote:
>>> I'm seeing some problems on accounts which get a lot of spam (like, a lot).
>>>
>>> I get these errors:
>>
>> When I do a process-list I see a lot of stuck lmtp processes on the same account:
>>
>> 16180 ?        D      0:00  \_ dovecot/lmtp [DATA 172.17.165.14 xxx at xxx]
>> 16181 ?        D      0:00  \_ dovecot/lmtp [DATA 172.17.165.14 xxx at xxx]
>>
>> x 600
>>
>> // Tom
> And you are sure this is not related to your NFS?
As a workaround, you could also try different low settings for lmtp_user_concurrency_limit and see if it removes the lock contention, but keeps lmtp performance bearable.

You do not have any external programs touching the maildir at the same time, right?

br,
Teemu Huovila