Applicable to:
- Plesk for Linux
Symptoms
-
Unable to read mail in Horde/Roundcube:
CONFIG_TEXT: IMAP error reported by server
CONFIG_TEXT: INTERNAL ERROR
Could not load message from server -
The following errors appear in
/var/log/maillog:CONFIG_TEXT: dovecot: service=imap, user=user@example.com, ip=[127.0.0.1]. Fatal: master: service(imap): child 688159 returned error 83 (Out of memory (service imap { vsz_limit=256 MB }, you may need to increase it) - set CORE_OUTOFMEM=1 environment to get core dump)
CONFIG_TEXT: Error: mmap(size=0) failed with file /var/qmail/mailnames/example.com/user/Maildir/dovecot.index.cache: Cannot allocate memory
Cause
The maximum limit for Dovecot process address space was exceeded.
The size of the file /var/qmail/mailnames/example.com/user/Maildir/dovecot.index.cache is more than the default "vsz_limit" value:
# ls -alh /var/qmail/mailnames/example.com/user/Maildir/dovecot.index.cache
-rw------- 1 popuser popuser 500M Feb 27 11:21 /var/qmail/mailnames/example.com/user/Maildir/dovecot.index.cache
# doveconf | grep default_vsz_limit
default_vsz_limit = 256 M
Resolution
Note: if you don't have root access to Plesk via SSH, contact your hosting provider regarding the issue
-
Connect to Plesk server via SSH;
- Open file in any text editor and Increase
vsz_limitvalue in the dovecot configuration (if the file does not exist, create it and insert the content below):
# vi /etc/dovecot/conf.d/99-vsz.conf
service imap {
vsz_limit = 1 G
}
default_vsz_limit = 1 G -
Reload Dovecot:
# systemctl reload dovecot.service
Comments
3 comments
works perfectly also if the file doesn't exist.
solve the problem with "timeout of inbox" by dovecot.
i use 512 MB for 1,5 million emails.
Very helpful! Thank you.
Worked here too.
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