Question Dovecot - error messages

[MartinB]

Hello !

I hope you can help me ...

Yesterday morning, I want to log in at my webmailer Roundcube ...
... but I can't : no connection to server !

Here are some lines from the logfile :

Dec 23 06:09:21 mail dovecot: imap-login: Error: read(imap) failed: Remote closed connection (destination service { process_limit } reached?)
Dec 23 06:09:21 mail dovecot: imap-login: Error: read(imap) failed: Remote closed connection (destination service { process_limit } reached?)
Dec 23 06:09:23 mail dovecot: imap-login: Error: read(imap) failed: Remote closed connection (destination service { process_limit } reached?)
Dec 23 06:09:29 mail dovecot: imap-login: Error: read(imap) failed: Remote closed connection (destination service { process_limit } reached?)
Dec 23 06:09:32 mail dovecot: imap-login: Error: fd_send(imap, 8) failed: Broken pipe
Dec 23 06:09:35 mail dovecot: imap-login: Error: read(imap) failed: Remote closed connection (destination service { process_limit } reached?)
Dec 23 06:09:35 mail dovecot: imap-login: Error: read(imap) failed: Remote closed connection (destination service { process_limit } reached?)
Dec 23 06:09:36 mail dovecot: imap-login: Error: read(imap) failed: Remote closed connection (destination service { process_limit } reached?)
Dec 23 06:09:42 mail dovecot: imap-login: Error: read(imap) failed: Remote closed connection (destination service { process_limit } reached?)
Dec 23 06:09:46 mail dovecot: imap-login: Error: read(imap) failed: Remote closed connection (destination service { process_limit } reached?)
Dec 23 06:09:51 mail dovecot: imap-login: Error: read(imap) failed: Remote closed connection (destination service { process_limit } reached?)
Dec 23 06:09:51 mail dovecot: imap-login: Error: read(imap) failed: Remote closed connection (destination service { process_limit } reached?)
Dec 23 06:10:00 mail dovecot: imap-login: Error: read(imap) failed: Remote closed connection (destination service { process_limit } reached?)
Dec 23 06:11:23 mail dovecot: imap-login: Error: read(imap) failed: Remote closed connection (destination service { process_limit } reached?)
Dec 23 06:11:23 mail dovecot: imap-login: Error: read(imap) failed: Remote closed connection (destination service { process_limit } reached?)
Dec 23 06:12:03 mail dovecot: imap-login: Error: read(imap) failed: Remote closed connection (destination service { process_limit } reached?)
Dec 23 06:12:03 mail dovecot: imap-login: Error: read(imap) failed: Remote closed connection (destination service { process_limit } reached?)

After restart Dovecot anything is okay !

Are special settings needed ?

Thanks for any tips ...


Bye, Martin

 

[IgorG]

1. Create a file /etc/dovecot/conf.d/99-imap-login.conf with the following content:
   
   service imap-login {
   process_limit = 200
   process_min_avail = 16
   }
   
   
2. Tune process_limit value according to the server load.
   

 

[MartinB]

Hello IgorG !

Thanks for your tip ...
... is adding the lines different to this :



Bye, Martin