Log Message:
Update to 2.5.2:

BUG FIXES

- in a milter setup log_id was left undefined, which resulted in log lines
  without id, and a SQL constraint violation "Column 'am_id' cannot be \ 
null"
  when logging to SQL was enabled. The bug was introduced in 2.5.1;
  problem reported by Martin Svensson;

- suppress a quarantining attempt if the message also needs to be archived
  to the same location (same sql key or same local filename);
  reported by Wazir Shpoon;

- adjust $socketname in amavisd-release to match its default counterpart
  in amavisd (i.e. /var/amavis/amavisd.sock); reported by Stanley Appel;

And more... please review the Changelog file.