ok the idle connection per folder is a factor
however in thunderbird i believe it defaults to 2 simultanious connections
mine is set to 5
in thunderbird see
The solution is to reduce the maximum number of connections in
Thunderbird. This can be done from Edit > Account Settings > Server
Settings (under the mail account for which the setting should be
modified) > Advanced > Maximum Number of server connections to cache.
I dont know of anything that would get it to 500?
as for outlook idle was not / is not supported past 2010 (if even that)
you need to go into
file --> options --> advanced --> send/receive
all you can change in there is the timing which defaults to 30 minutes,
i recommend 3 or 5
I am unaware of how outlook handles physical connections (maybe
registery?) and google revieled nothing, outlook since 2010 just does
not support imap, microsofts way of forcing everyone onto exchange /
outlook 365
377,000 hits last time i googled imap issues in outlook.
Best suggestion is to run
# ps -axww | grep imap
25500 - S 0:00.57 imap: [p...@hiscomputer.ca 172.97.150.95
IDLE] (imap)
25530 - S 0:00.36 imap: [p...@hiscomputer.ca 172.97.150.95
IDLE] (imap)
26014 - I 0:00.39 imap: [rco...@tnky.ca 172.97.128.227 IDLE]
(imap)
26018 - I 0:00.38 imap: [rco...@tnky.ca 172.97.128.227 IDLE]
(imap)
26210 - I 0:00.07 imap: [spa...@scom.ca 99.238.154.160 IDLE]
(imap)
38911 - S 0:00.17 imap: [marilynla...@scom.ca 142.188.149.199
IDLE] (imap)
38912 - S 0:00.13 imap: [marilynla...@scom.ca 142.188.149.199
IDLE] (imap)
41306 - S 0:00.73 imap: [ed.ha...@dssmgmt.com 204.237.48.37
IDLE] (imap)
41312 - S 0:00.63 imap: [ed.ha...@ekst.ca 204.237.48.37 IDLE]
(imap)
45232 - I 0:00.23 imap: [rco...@tnky.ca 172.97.128.227 IDLE]
(imap)
55504 - I 0:00.16 imap: [rco...@tnky.ca 172.97.128.227 IDLE]
(imap)
which shows all imap connections and from where
if you are overflowing 500+ connections then it has to show up here.
Happy Thursday !!!
Thanks - paul
Paul Kudla
Scom.ca Internet Services <http://www.scom.ca>
004-1009 Byron Street South
Whitby, Ontario - Canada
L1N 4S3
Toronto 416.642.7266
Main 1.866.411.7266
Fax 1.888.892.7266
Email p...@scom.ca
On 6/8/2022 6:41 PM, Jeremy Schaeffer wrote:
Ahhh, Ok, I did not know that and now that makes sense. I did not
realize it held a open connection for each folder. I increased that and
I will see what happens. I wonder if that will also effect the outlook
issues. Thanks! - Jeremy
On 6/8/2022 14:28, Frank-Ulrich Sommer wrote:
I think if IMAP IDLE is used you need one connection per folder. If I
remember correctly at least either Thunderbird or K9 Mail (I'm using
both too) use one connection per selected directory. Simply increasing
the number of connections was the easiest solution as I only have very
few users too.
Regards
Frank
Am 8. Juni 2022 21:14:23 MESZ schrieb Jeremy Schaeffer
<kb9...@phonesplus.biz>:
I keep having this issue with one user, and I have to restart dovecot
several times a day to clear it. What I have is a postfix / dovecot mail
server (Centos 7) and about a dozen users. All mailboxes are imap ssl. I
monitor about 4 mailboxes on my computer and tablet. I use Thunderbird
on the computer (cache connections at 2) and K9 on the tablet, but one
user of the four I keep getting "Maximum number of connections from
user+IP exceeded" and I have the maximum at 50
"(mail_max_userip_connections=50)" so its hard for me to believe I am
actually exceeding it unless dovecot/client is not dropping connections
and keeps starting new ones until it reaches the maximum, but again,
only for one user, even though I am monitoring 4 on the same devices.
Any idea how to troubleshoot this? I don't know if I should be looking
at dovecot or the clients, or what I need to look for. It's been going
on since I put this server in use over a year ago. I also have issues
with Outlook clients disconnecting, just outlook, is there any
recommended settings to make Outlook work smoother?
Thanks! - Jeremy
Config -
# 2.2.36 (1f10bfa63): /etc/dovecot/dovecot.conf
# OS: Linux 3.10.0-1160.11.1.el7.x86_64 x86_64 CentOS Linux release
7.9.2009 (Core)
# Hostname: ***
auth_mechanisms = plain login
debug_log_path = /var/log/dovecot_debug.log
first_valid_gid = 500
last_valid_gid = 600
last_valid_uid = 600
listen = *
mail_location = maildir:~/Maildir
mbox_write_locks = fcntl
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 = INBOX.
separator = .
}
passdb {
driver = pam
}
pop3_uidl_format = %f
protocols = imap lmtp
service auth {
unix_listener /var/spool/postfix/private/auth {
group = postfix
mode = 0660
user = postfix
}
}
service imap-login {
inet_listener imap {
port = 143
}
inet_listener imaps {
port = 993
ssl = yes
}
process_min_avail = 1
service_count = 0
}
service imap {
process_limit = 1024
}
service lmtp {
unix_listener lmtp {
mode = 0666
}
}
ssl = required
ssl_cert = <***
ssl_cipher_list = ECDHE-RSA-CHACHA20-POLY1305:ALL:!LOW:!SSLv2:!EXP:!aNULL
ssl_key = # hidden, use -P to show it
ssl_prefer_server_ciphers = yes
userdb {
driver = passwd
}
protocol imap {
mail_max_userip_connections = 50
}
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gesendet.
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