Only allow 1800 loops in a thread, to prevent email IMAP fetch stops working if mailserver is once unreachable. Fixes issue#1861.
Only allow 1800 loops in a thread, to prevent email IMAP fetch stops working if mailserver is once unreachable. Fixes issue#1861.

monotek/zammad,zammad/zammad,zammad/zammad,zammad/zammad,monotek/zammad,monotek/zammad,monotek/zammad,monotek/zammad,zammad/zammad,zammad/zammad,zammad/zammad,monotek/zammad