fts_solr: Lookup failed: 400 Bad Request / GET null null

[Stephan Bosch]

Op 3-4-2016 om 14:39 schreef Chris Laif:
> Hi,
>
> the log file shows suspicious entries as follows:
>
> Apr  3 09:14:49 xxx dovecot: imap(user at domain): Error: fts_solr:
> Lookup failed: 400 Bad Request
>
> The tomcat7 log shows for this request:
>
> 10.0.0.234 - - [03/Apr/2016:09:14:49 +0200] "GET null null" 400 -
>
> Dovecot is latest 2.2.23 with a pretty standard FTS config copied from the wiki:
>
> mail_plugins = " acl fts fts_solr"
> fts = solr
> fts_solr = break-imap-search url=http://10.0.0.123:8080/solr/
>
> Unfortunately I do not know (yet) which client action produces these
> log lines. "GET null null" seems not to be a sensible request in any
> case.
>
> Anyone seeing the same effect?

Did this happen only after upgrade to 2.2.23 or is this a fresh install?

Can you make a dump of what messages are exchanged on 10.0.0.123:8080 
using ngrep or wireshark?

Regards,

Stephan.