Aw: fts_solr Bad Request / BUG: Unknown internal error

Infoomatic infoomatic at
Sun Jun 14 11:09:18 UTC 2015

I had the same experience. I used the current dovecot and SOLR 5.2. It works with 4.10, so my first wild guess would be that there is a bug in dovecots url encoding sending to solr (they possibly updated some stuff in url handling? - don't know).

In SOLR 5.2 i created a core "mail3" and copied the config from my working 4.10 installation. Indexing new messages seem to work, but searching gives a http 400 error.

Firing up the query in solrs web interface works ... one of my test cases was select?fl=uid,score&rows=3&sort=uid+asc&q=subject:%22blubb%22&fq=%2Bbox:b624920e60057c554e4a0000df211752+%2Buser:%22user%22

For further reference see

Could the devs please have a look at this, it might hopefully be just a small change.


> Gesendet: Freitag, 12. Juni 2015 um 11:19 Uhr
> Von: "Nick Rosier" <nick+dovecot at>
> An: dovecot at
> Betreff: fts_solr Bad Request / BUG: Unknown internal error
> Hi,
> yesterday I created a new mailbox; ever since (and only for the new 
> mailbox) I am getting these errors:
> 2015-06-12T00:00:29.808526+02:00 mail dovecot: 
> indexer-worker(xxx at Error: fts_solr: Lookup failed: Bad 
> Request
> 2015-06-12T00:00:29.808560+02:00 mail dovecot: 
> indexer-worker(xxx at Error: Mailbox INBOX: Status lookup 
> failed: BUG: Unknown internal error
> Is this a known issue?
> Rgds,
> N.

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