On Fri, January 11, 2019 17:51, Michael Menge wrote: Thank you for your assistance. > > have you configured a search engine? and have you enabled the > conversation db. > Xapian and Squatter seam to require enabled conversation db to use the > search index. At least for squatter there is even a performance > regression for TEXT search even if conversation db is enabled > (https://github.com/cyrusimap/cyrus-imapd/issues/2598) I do not believe that I have configured a search engine. > > >> Are the longlock reports and the imap connection drop related? >> > An cyrus processes tires to gain access to the mailbox while an > other process is still accessing it. If this takes to long the client > might disconnect. You can try telemetry logging to discover what is > happening. >> If imap drops a connection is the reason for that event logged? Can >> it be logged? >> > The question is which side drops the connection the cyrus-imapd > process or the imap client (squirrelmail)? tcpdum and telemetry > logging might reveal the answer. Squirrelmail reports that the IMAP server dropped the connection as part of the error message. In any case, even if it is the squrrelmail client that is dropping the connection one would expect that imap service could report this event. So the question remains, how does one log the cause of cyrus_imapd dropping a connection? As to the cause of the problem. It was an excessive load on the imap daemon from a persistent brute force attack. A recent reconfiguration and change of server host resulted in port 993 being opened to unrestricted public access. This attracted the usual assortment of script kiddies, security 'researchers' of various ilk, and so forth. Closing that port down immediately resolved the issue. Thanks for the suggestions. I will look into these now that the crisis has passed. Regards, -- *** e-Mail is NOT a SECURE channel *** Do NOT transmit sensitive data via e-Mail Do NOT open attachments nor follow links sent by e-Mail James B. Byrne mailto:ByrneJB@xxxxxxxxxxxxx Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3 ---- Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/ To Unsubscribe: https://lists.andrew.cmu.edu/mailman/listinfo/info-cyrus
