Last time I had this issue it turned out GFS2 was the culprit. http://www.postfix.org/QSHAPE_README.html
Regards Durga Prasad +919849111010 -----Original Message----- From: dovecot [mailto:dovecot-boun...@dovecot.org] On Behalf Of Håkon Alstadheim Sent: 16 November 2018 04:05 To: dovecot@dovecot.org Subject: Re: Mail slowed down to a crawl... Den 15.11.2018 21:00, skrev StarionTech (IMAP): > Been moving along just fine for a couple years now, then in the last two > days, email has slowed to a crawl. > > Retrieving email via IMAP is very slow, progress bar in the mail client shows > that it is downloading messages almost constantly, like it never closes the > connection, or it’s getting the messages very slowly. The server that > dovecot/postfix is on has also bogged down to a crawl. > > The postfix queue is sitting with hundreds of queued up good customer email. > > It’s almost acting like dovecot is not getting the messages from postfix, or > they’re being delayed for some reason. > > How to approach fixing this? Check server logs for errors. Both dovecot and postfix struggling suggest some common underlying cause. Do measurements on Cpu, disk, cpu-wait. Which process is hogging the server ? Spam-ass acting up? Drives filling up? Gut instinct says one or more of your drives are failing, or you have file or file-system corruption, so if you are not running smartd, first priority is installing smartd/smartmontools and see what falls out. --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus
