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
> <kb9mfd at 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
> }
>
> -- Diese Nachricht wurde von meinem Android-Mobiltelefon mit K-9 Mail
> gesendet.
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