Fatal: master: service(imap): child 20258 killed with signal 6 (core not dumped - set service imap { drop_priv_before_exec=yes })

[Reindl Harald]

Am 10.07.2014 17:32, schrieb CJ Keist:
> Another problem is people are getting error message from their clients stating 
> they have exceeded their number of connections.

mail_max_userip_connections = 50

well, how much folders do the have

keep in mind that fpr IDLE you have one connection per user and folder
10 users with 10 folders behind the same NAT router are 100 connections
from the same IP

> On 7/10/14, 9:09 AM, CJ Keist wrote:
>> Added info:  These errors seem to come from users using mbox format.
>>
>>
>> On 7/10/14, 9:04 AM, CJ Keist wrote:
>>> All,
>>>    Just move our mail servers over to a new mail server running postfix
>>> 2.11.1 and dovecot 2.2.13 and getting the subject line errors in my
>>> /var/adm/files.  People are complaining of loosing their connections to
>>> the mail server.
>>>
>>> I've been able to google this error but haven't found fix for this yet.
>>>   NOt sure where to put the drop-priv option in the config files either.
>>>
>>> Any suggestions?
>>>
>>> Var adm message:
>>> Jul 10 08:54:29 mail2 dovecot: [ID 583609 mail.crit] imap(chen): Fatal:
>>> master: service(imap): child 20258 killed with signal 6 (core not dumped
>>> - set service imap { drop_priv_before_exec=yes })
>>>
>>> Here is config output:
>>>
>>> root at mail2:/userM/mail-services/dovecot/sbin# ./dovecot -n
>>> # 2.2.13: /userM/mail-services/dovecot/etc/dovecot/dovecot.conf
>>> # OS: SunOS 5.11 i86pc
>>> auth_failure_delay = 5 secs
>>> auth_mechanisms = plain login cram-md5
>>> auth_worker_max_count = 300
>>> base_dir = /userM/mail-services/dovecot/var/run/dovecot/
>>> disable_plaintext_auth = no
>>> hostname = mail2.engr.colostate.edu
>>> managesieve_notify_capability = mailto
>>> managesieve_sieve_capability = fileinto reject envelope
>>> encoded-character vacation subaddress comparator-i;ascii-numeric
>>> relational regex imap4flags copy include variables body enotify
>>> environment mailbox date ihave duplicate
>>> namespace inbox {
>>>    inbox = yes
>>>    location =
>>>    mailbox Drafts {
>>>      special_use = \Drafts
>>>    }
>>>    mailbox Junk {
>>>      special_use = \Junk
>>>    }
>>>    mailbox Sent {
>>>      special_use = \Sent
>>>    }
>>>    mailbox "Sent Messages" {
>>>      special_use = \Sent
>>>    }
>>>    mailbox Trash {
>>>      special_use = \Trash
>>>    }
>>>    prefix =
>>> }
>>> passdb {
>>>    driver = pam
>>> }
>>> passdb {
>>>    driver = passwd
>>> }
>>> postmaster_address = cjay at engr.colostate.edu
>>> service auth {
>>>    unix_listener /var/lib/postfix/private/auth {
>>>      mode = 0666
>>>    }
>>>    unix_listener auth-userdb {
>>>      group = postfix
>>>      mode = 0666
>>>      user = postfix
>>>    }
>>>    user = root
>>> }
>>> service imap-login {
>>>    inet_listener imap {
>>>      port = 143
>>>    }
>>>    inet_listener imaps {
>>>      port = 993
>>>      ssl = yes
>>>    }
>>> }
>>> service pop3-login {
>>>    inet_listener pop3 {
>>>      port = 110
>>>    }
>>>    inet_listener pop3s {
>>>      port = 995
>>>      ssl = yes
>>>    }
>>> }
>>> ssl_cert = </userM/mail-services/dovecot/etc/ssl/dovecot.pem
>>> ssl_key = </userM/mail-services/dovecot/etc/ssl/privkey.pem
>>> userdb {
>>>    args = blocking=yes
>>>    driver = passwd
>>> }
>>> protocol imap {
>>>    mail_max_userip_connections = 50
>>> }
>>> protocol lda {
>>>    mail_plugins = sieve
>>> }

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