Hi. After a server reboot IMAP has stoped working; It does not accept passwords. This is for Thunderburd, Evolution and Roundcube. Code: root@serv14:~# telnet XXXXX.com.br 143 Trying 66.7.2XX7.XX4... Connected to XXXXs.com.br. Escape character is '^]'. * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE STARTTLS AUTH=PLAIN AUTH=LOGIN] Dovecot ready. I use Ubunutu 12.04.2LTS and the latest ISPCONFIG 3,05RC1
I restarted mysql, but no go, still the same problem. see log file below Code: Feb 4 09:18:53 serv14 postfix/qmgr[3102]: 91B0F5604EC: from=<[email protected]>, size=86017, nrcpt=1 (queue active) Feb 4 09:18:53 serv14 amavis[3934]: (03934-06) Passed SPAMMY, [94.23.75.218] [94.23.75.218] <[email protected]> -> <[email protected]>, Message-ID: <[email protected]>, mail_id: 09ss30bF+dqZ, Hits: 18.549, size: 84748, queued_as: 91B0F5604EC, [email protected], 709 ms Feb 4 09:18:53 serv14 postfix/smtp[5472]: 74434560347: to=<[email protected]>, relay=127.0.0.1[127.0.0.1]:10024, delay=1.2, delays=0.5/0/0/0.71, dsn=2.0.0, status=sent (250 2.0.0 from MTA([127.0.0.1]:10025): 250 2.0.0 Ok: queued as 91B0F5604EC) Feb 4 09:18:53 serv14 postfix/qmgr[3102]: 74434560347: removed Feb 4 09:18:53 serv14 postfix/qmgr[3102]: 4843356068F: from=<[email protected]>, size=84736, nrcpt=1 (queue active) Feb 4 09:18:53 serv14 dovecot: lda([email protected]): sieve: msgid=<[email protected]>: stored mail into mailbox 'INBOX' Feb 4 09:18:53 serv14 postfix/pipe[5491]: 91B0F5604EC: to=<[email protected]>, relay=dovecot, delay=0.25, delays=0.08/0/0/0.17, dsn=2.0.0, status=sent (delivered via dovecot service) Feb 4 09:18:53 serv14 postfix/qmgr[3102]: 91B0F5604EC: removed Feb 4 09:18:54 serv14 postfix/smtpd[5519]: disconnect from el218.elclube.com.br[94.23.75.218] Feb 4 09:18:54 serv14 postfix/smtpd[5490]: 81DAD560347: client=localhost.localdomain[127.0.0.1] Feb 4 09:18:54 serv14 postfix/cleanup[5524]: 81DAD560347: message-id=<[email protected]> Feb 4 09:18:54 serv14 postfix/smtpd[5490]: disconnect from localhost.localdomain[127.0.0.1] Feb 4 09:18:54 serv14 postfix/qmgr[3102]: 81DAD560347: from=<[email protected]>, size=85995, nrcpt=1 (queue active) Feb 4 09:18:54 serv14 amavis[3260]: (03260-11) Passed SPAMMY, [94.23.75.218] [94.23.75.218] <[email protected]> -> <[email protected]>, Message-ID: <[email protected]>, mail_id: 8p0jGDEgNGH2, Hits: 18.549, size: 84734, queued_as: 81DAD560347, [email protected], 835 ms Feb 4 09:18:54 serv14 postfix/smtp[5472]: 4843356068F: to=<[email protected]>, relay=127.0.0.1[127.0.0.1]:10024, delay=1.3, delays=0.5/0/0/0.84, dsn=2.0.0, status=sent (250 2.0.0 from MTA([127.0.0.1]:10025): 250 2.0.0 Ok: queued as 81DAD560347) Feb 4 09:18:54 serv14 postfix/qmgr[3102]: 4843356068F: removed Feb 4 09:18:54 serv14 dovecot: lda([email protected]): sieve: msgid=<[email protected]>: stored mail into mailbox 'INBOX' Feb 4 09:18:54 serv14 postfix/pipe[5491]: 81DAD560347: to=<[email protected]>, relay=dovecot, delay=0.21, delays=0.08/0/0/0.12, dsn=2.0.0, status=sent (delivered via dovecot service) Feb 4 09:18:54 serv14 postfix/qmgr[3102]: 81DAD560347: removed Feb 4 09:18:55 serv14 dovecot: pop3-login: Login: user=<[email protected]>, method=PLAIN, rip=201.22.164.184, lip=66.7.220.30, mpid=5529 Feb 4 09:18:55 serv14 dovecot: pop3([email protected]): Disconnected: Logged out top=0/0, retr=0/0, del=0/0, size=0 Feb 4 09:19:01 serv14 postfix/smtpd[5519]: connect from localhost.localdomain[127.0.0.1] Feb 4 09:19:01 serv14 postfix/smtpd[5519]: lost connection after CONNECT from localhost.localdomain[127.0.0.1] Feb 4 09:19:01 serv14 postfix/smtpd[5519]: disconnect from localhost.localdomain[127.0.0.1] Feb 4 09:19:01 serv14 dovecot: imap-login: Disconnected (no auth attempts): rip=127.0.0.1, lip=127.0.0.1, secured Feb 4 09:19:01 serv14 dovecot: pop3-login: Disconnected (no auth attempts): rip=127.0.0.1, lip=127.0.0.1, secured
Code: listen = *,[::] protocols = imap pop3 auth_mechanisms = plain login disable_plaintext_auth = no log_timestamp = "%Y-%m-%d %H:%M:%S " mail_privileged_group = vmail ssl_cert = </etc/postfix/smtpd.cert ssl_key = </etc/postfix/smtpd.key passdb { args = /etc/dovecot/dovecot-sql.conf driver = sql } userdb { args = /etc/dovecot/dovecot-sql.conf driver = sql } plugin { quota = dict:user::file:/var/vmail/%d/%n/.quotausage sieve=/var/vmail/%d/%n/.sieve } service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } unix_listener auth-userdb { group = vmail mode = 0600 user = vmail } user = root } protocol imap { mail_plugins = quota imap_quota } protocol pop3 { pop3_uidl_format = %08Xu%08Xv mail_plugins = quota } protocol lda { mail_plugins = sieve quota }
netstat -tap Code: root@serv14:/etc/dovecot# netstat -tap Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 *:ssh *:* LISTEN 924/sshd tcp 0 0 localhost.localdom:9030 *:* LISTEN 2944/php-fpm.conf) tcp 0 0 localhost.localdom:9000 *:* LISTEN 2944/php-fpm.conf) tcp 0 0 localhost.localdo:10024 *:* LISTEN 1240/amavisd (maste tcp 0 0 localhost.localdo:10025 *:* LISTEN 3091/master tcp 0 0 *:mysql *:* LISTEN 4257/mysqld tcp 0 0 *:submission *:* LISTEN 3091/master tcp 0 0 *:pop3 *:* LISTEN 1133/dovecot tcp 0 0 *:imap2 *:* LISTEN 1133/dovecot tcp 0 0 *:http *:* LISTEN 2798/nginx tcp 0 0 *:http-alt *:* LISTEN 2798/nginx tcp 0 0 *:81 *:* LISTEN 3335/apache2 tcp 0 0 *:tproxy *:* LISTEN 2798/nginx tcp 0 0 *:8082 *:* LISTEN 2798/nginx tcp 0 0 localhost.localdom:9011 *:* LISTEN 2944/php-fpm.conf) tcp 0 0 *:8083 *:* LISTEN 2798/nginx tcp 0 0 *:ftp *:* LISTEN 3113/pure-ftpd (SER tcp 0 0 localhost.localdom:9013 *:* LISTEN 2944/php-fpm.conf) tcp 0 0 scesgo.com.br:domain *:* LISTEN 1120/named tcp 0 0 dns25513.dizinc.:domain *:* LISTEN 1120/named tcp 0 0 dns25514.dizinc.:domain *:* LISTEN 1120/named tcp 0 0 serv14.vecks.com:domain *:* LISTEN 1120/named tcp 0 0 localhost.locald:domain *:* LISTEN 1120/named tcp 0 0 localhost.localdom:9015 *:* LISTEN 2944/php-fpm.conf) tcp 0 0 localhost.lo:postgresql *:* LISTEN 1265/postgres tcp 0 0 *:smtp *:* LISTEN 3091/master tcp 0 0 localhost.localdoma:953 *:* LISTEN 1120/named tcp 0 0 scesgo.com.br:https *:* LISTEN 2798/nginx tcp 0 0 localhost.localdom:2812 *:* LISTEN 3429/monit tcp 0 0 localhost.localdom:9021 *:* LISTEN 2944/php-fpm.conf) tcp 0 0 *:6081 *:* LISTEN 3165/varnishd tcp 0 0 *:41121 *:* LISTEN 3136/perl tcp 0 0 *:imaps *:* LISTEN 1133/dovecot tcp 0 0 localhost.localdom:6082 *:* LISTEN 3164/varnishd tcp 0 0 localhost.localdom:9026 *:* LISTEN 2944/php-fpm.conf) tcp 0 0 *:pop3s *:* LISTEN 1133/dovecot ]tcp 0 0 scesgo.com.br:http 201-15-113-25.gna:50592 ESTABLISHED 2799/nginx: worker tcp 0 0 localhost.localdo:mysql localhost.localdo:60604 ESTABLISHED 4257/mysqld tcp 0 0 scesgo.com.br:http 187.113.38.202.st:37497 ESTABLISHED 2799/nginx: worker tcp 0 0 localhost.localdo:mysql localhost.localdo:60600 ESTABLISHED 4257/mysqld tcp 0 385476 scesgo.com.br:http 189-72-210-28.gna:49569 ESTABLISHED 2803/nginx: worker tcp 0 114372 scesgo.com.br:http 189-74-52-71.gnal:61290 ESTABLISHED 2800/nginx: worker tcp 0 0 scesgo.com.br:http 201-15-113-25.gna:50582 ESTABLISHED 2799/nginx: worker tcp 0 0 localhost.localdo:60604 localhost.localdo:mysql ESTABLISHED 5242/smtpd tcp 0 43645 scesgo.com.br:http 189-74-52-71.gnal:61293 ESTABLISHED 2800/nginx: worker tcp 0 119520 scesgo.com.br:http 187.115.67.17.sta:58437 ESTABLISHED 2803/nginx: worker tcp 0 250560 scesgo.com.br:http 187-032-127-109.s:45524 ESTABLISHED 2799/nginx: worker tcp 0 0 scesgo.com.br:http 189-70-160-137.use:2102 ESTABLISHED 2801/nginx: worker tcp 0 0 scesgo.com.br:http 201.86.184.50.dyna:3432 TIME_WAIT - tcp 0 0 scesgo.com.br:http 189-72-231-21.e.gn:1386 ESTABLISHED 2800/nginx: worker tcp 0 0 scesgo.com.br:http 201-15-113-25.gna:50590 ESTABLISHED 2799/nginx: worker tcp 0 0 localhost.localdo:60603 localhost.localdo:mysql ESTABLISHED 5242/smtpd tcp 0 0 scesgo.com.br:http 201.86.184.50.dyna:3430 TIME_WAIT - tcp 0 0 serv14.vecks.com.:55658 kudan.canonical.co:http TIME_WAIT - tcp 0 0 localhost.localdo:mysql localhost.localdo:60606 ESTABLISHED 4257/mysqld tcp 0 0 localhost.localdo:mysql localhost.localdo:60605 ESTABLISHED 4257/mysqld tcp 0 0 serv14.vecks.com.:60787 haetae.canonical.c:http TIME_WAIT - tcp 0 220704 scesgo.com.br:http 177.157.94.147.dyn:1401 ESTABLISHED 2800/nginx: worker tcp 0 0 scesgo.com.br:http 201-15-113-25.gna:50585 ESTABLISHED 2799/nginx: worker tcp 0 0 scesgo.com.br:http 201-15-113-25.gna:50591 ESTABLISHED 2799/nginx: worker tcp 0 0 localhost.localdo:60600 localhost.localdo:mysql ESTABLISHED 7596/trivial-rewrit tcp 0 0 scesgo.com.br:http 189-72-231-21.e.gn:1390 ESTABLISHED 2800/nginx: worker tcp 0 0 localhost.localdo:60599 localhost.localdo:mysql ESTABLISHED 7816/proxymap tcp 0 0 scesgo.com.br:http 189-72-231-21.e.gn:1384 ESTABLISHED 2800/nginx: worker tcp 0 0 scesgo.com.br:smtp 50.22.82.220-stat:58652 TIME_WAIT - tcp 0 0 localhost.localdo:10025 localhost.localdo:58816 TIME_WAIT - tcp 0 0 localhost.localdo:mysql localhost.localdo:60603 ESTABLISHED 4257/mysqld tcp 0 0 serv14.vecks.com.:38046 odd.varnish-softwa:http TIME_WAIT - tcp 0 0 localhost.localdo:60602 localhost.localdo:mysql ESTABLISHED 5242/smtpd tcp 0 0 localhost.localdo:mysql localhost.localdo:60442 ESTABLISHED 4257/mysqld tcp 0 55068 scesgo.com.br:http 189-74-52-71.gnal:61294 ESTABLISHED 2800/nginx: worker tcp 0 115784 scesgo.com.br:http 189-74-52-71.gnal:61292 ESTABLISHED 2800/nginx: worker tcp 0 0 serv14.vecks.com.:45655 jatoba.canonical.c:http TIME_WAIT - tcp 0 48008 scesgo.com.br:http 189-74-52-71.gnal:64878 ESTABLISHED - tcp 0 0 scesgo.com.br:pop3 serv192.scesgo.co:50865 TIME_WAIT - tcp 0 0 localhost.localdo:mysql localhost.localdo:60601 ESTABLISHED 4257/mysqld tcp 0 0 localhost.localdo:10025 localhost.localdo:58756 TIME_WAIT - tcp 0 108724 scesgo.com.br:http 189-74-52-71.gnal:61288 ESTABLISHED 2800/nginx: worker tcp 0 0 scesgo.com.br:http 201.86.184.50.dyna:3433 TIME_WAIT - tcp 0 0 scesgo.com.br:http 187.4.99.33:50676 ESTABLISHED 2800/nginx: worker tcp 0 0 serv14.vecks.com.:45631 jatoba.canonical.c:http TIME_WAIT - tcp 0 213250 scesgo.com.br:http 201.22.177.140.dy:rootd FIN_WAIT1 - tcp 0 0 scesgo.com.br:http 187.4.99.33:50698 ESTABLISHED 2800/nginx: worker tcp 0 36 dns25513.dizinc.com:ssh 177.17.199.240.dy:46833 ESTABLISHED 2469/0 tcp 0 0 localhost.localdo:10025 localhost.localdo:58818 ESTABLISHED 7637/smtpd tcp 0 0 localhost.localdo:mysql localhost.localdo:60614 ESTABLISHED 4257/mysqld tcp 0 0 localhost.localdo:mysql localhost.localdo:60602 ESTABLISHED 4257/mysqld tcp 0 0 scesgo.com.br:http 189-72-231-21.e.gn:1396 ESTABLISHED 2800/nginx: worker tcp 0 0 localhost.localdo:58821 localhost.localdo:10025 ESTABLISHED 7835/amavisd (ch2-a tcp 0 0 localhost.localdo:10025 localhost.localdo:58821 ESTABLISHED 7841/smtpd tcp 0 0 scesgo.com.br:http 201-15-113-25.gna:50583 ESTABLISHED 2799/nginx: worker tcp 0 0 serv14.vecks.com.:56795 scandium.canonical:http TIME_WAIT - tcp 0 0 serv14.vecks.com.:35984 orobas.canonical.c:http TIME_WAIT - tcp 0 283140 scesgo.com.br:http 201-15-83-128.gnac:3945 ESTABLISHED 2803/nginx: worker tcp 0 0 scesgo.com.br:http 189-70-160-137.use:2094 ESTABLISHED 2801/nginx: worker tcp 0 0 scesgo.com.br:http 187.4.99.33:50674 ESTABLISHED 2800/nginx: worker tcp 0 0 localhost.localdo:60442 localhost.localdo:mysql ESTABLISHED 7175/amavisd (ch7-a tcp 0 0 scesgo.com.br:http 189-72-231-21.e.gn:1382 ESTABLISHED 2800/nginx: worker tcp 0 0 scesgo.com.br:http 189-72-231-21.e.gn:1380 ESTABLISHED 2800/nginx: worker tcp 0 0 serv14.vecks.com.:59141 obake.canonical.co:http TIME_WAIT - tcp 0 0 scesgo.com.br:http 201-15-113-25.gna:50584 ESTABLISHED 2799/nginx: worker tcp 0 0 localhost.localdo:60164 localhost.localdo:mysql TIME_WAIT - tcp 0 0 scesgo.com.br:pop3 serv192.scesgo.co:49409 TIME_WAIT - tcp 0 0 scesgo.com.br:http 187.4.99.33:50675 ESTABLISHED 2800/nginx: worker tcp 0 0 localhost.localdo:60614 localhost.localdo:mysql ESTABLISHED 7835/amavisd (ch2-a tcp 0 0 localhost.localdo:60605 localhost.localdo:mysql ESTABLISHED 7816/proxymap tcp 0 132728 scesgo.com.br:http 189-74-52-71.gnal:61289 ESTABLISHED 2800/nginx: worker tcp 0 0 localhost.localdom:http localhost.localdo:53955 TIME_WAIT - tcp 0 388800 scesgo.com.br:http 187-032-127-109.s:45528 ESTABLISHED 2799/nginx: worker tcp 0 0 scesgo.com.br:http 187.4.99.33:50677 ESTABLISHED 2800/nginx: worker tcp 0 79072 scesgo.com.br:http 189-74-52-71.gnal:64879 ESTABLISHED - tcp 0 0 scesgo.com.br:http 187.4.99.33:50672 ESTABLISHED 2800/nginx: worker tcp 0 0 localhost.localdo:60606 localhost.localdo:mysql ESTABLISHED 7816/proxymap tcp 0 66364 scesgo.com.br:http 189-74-52-71.gnal:64814 ESTABLISHED 2799/nginx: worker tcp 0 0 scesgo.com.br:http 187.113.38.202.st:37488 ESTABLISHED 2800/nginx: worker tcp 0 0 localhost.localdo:57652 localhost.localdoma:ftp TIME_WAIT - tcp 0 0 scesgo.com.br:http 201-15-113-25.gna:50581 ESTABLISHED 2799/nginx: worker tcp 0 0 scesgo.com.br:http 177.157.94.147.dyn:1380 ESTABLISHED 2800/nginx: worker tcp 0 0 localhost.localdo:mysql localhost.localdo:60599 ESTABLISHED 4257/mysqld tcp 0 0 localhost.localdom:http localhost.localdo:53941 TIME_WAIT - tcp 0 0 scesgo.com.br:http 187.4.99.33:50673 ESTABLISHED 2800/nginx: worker tcp 0 0 localhost.localdo:60601 localhost.localdo:mysql ESTABLISHED 7816/proxymap tcp 0 0 scesgo.com.br:http 187.113.38.202.st:37489 ESTABLISHED 2800/nginx: worker tcp 0 0 scesgo.com.br:http 189-72-231-21.e.gn:1388 ESTABLISHED 2800/nginx: worker tcp 0 0 localhost.localdo:58818 localhost.localdo:10025 ESTABLISHED 7175/amavisd (ch7-a tcp 0 0 scesgo.com.br:http 189-72-231-21.e.gn:1395 ESTABLISHED 2800/nginx: worker tcp6 0 0 [::]:ssh [::]:* LISTEN 924/sshd tcp6 0 0 [::]:submission [::]:* LISTEN 3091/master tcp6 0 0 [::]:pop3 [::]:* LISTEN 1133/dovecot tcp6 0 0 [::]:imap2 [::]:* LISTEN 1133/dovecot tcp6 0 0 [::]:ftp [::]:* LISTEN 3113/pure-ftpd (SER tcp6 0 0 [::]:domain [::]:* LISTEN 1120/named tcp6 0 0 [::]:smtp [::]:* LISTEN 3091/master tcp6 0 0 ip6-localhost:953 [::]:* LISTEN 1120/named tcp6 0 0 [::]:6081 [::]:* LISTEN 3165/varnishd tcp6 0 0 [::]:imaps [::]:* LISTEN 1133/dovecot tcp6 0 0 [::]:pop3s [::]:* LISTEN 1133/dovecot Code: root@serv14:/etc/dovecot# iptables -L Chain INPUT (policy DROP) target prot opt source destination fail2ban-dovecot-pop3imap tcp -- anywhere anywhere multiport dports pop3,pop3s,imap2,imaps fail2ban-pureftpd tcp -- anywhere anywhere multiport dports ftp fail2ban-ssh tcp -- anywhere anywhere multiport dports ssh DROP tcp -- anywhere loopback/8 ACCEPT all -- anywhere anywhere state RELATED,ESTABLISHED ACCEPT all -- anywhere anywhere DROP all -- base-address.mcast.net/4 anywhere PUB_IN all -- anywhere anywhere PUB_IN all -- anywhere anywhere PUB_IN all -- anywhere anywhere PUB_IN all -- anywhere anywhere PUB_IN all -- anywhere anywhere DROP all -- anywhere anywhere Chain FORWARD (policy DROP) target prot opt source destination ACCEPT all -- anywhere anywhere state RELATED,ESTABLISHED DROP all -- anywhere anywhere Chain OUTPUT (policy ACCEPT) target prot opt source destination PUB_OUT all -- anywhere anywhere PUB_OUT all -- anywhere anywhere PUB_OUT all -- anywhere anywhere PUB_OUT all -- anywhere anywhere PUB_OUT all -- anywhere anywhere Chain INT_IN (0 references) target prot opt source destination ACCEPT icmp -- anywhere anywhere DROP all -- anywhere anywhere Chain INT_OUT (0 references) target prot opt source destination ACCEPT icmp -- anywhere anywhere ACCEPT all -- anywhere anywhere Chain PAROLE (21 references) target prot opt source destination ACCEPT all -- anywhere anywhere Chain PUB_IN (5 references) target prot opt source destination ACCEPT icmp -- anywhere anywhere icmp destination-unreachable ACCEPT icmp -- anywhere anywhere icmp echo-reply ACCEPT icmp -- anywhere anywhere icmp time-exceeded ACCEPT icmp -- anywhere anywhere icmp echo-request PAROLE tcp -- anywhere anywhere tcp dpt:ftp-data PAROLE tcp -- anywhere anywhere tcp dpt:ftp PAROLE tcp -- anywhere anywhere tcp dpt:22 PAROLE tcp -- anywhere anywhere tcp dpt:smtp PAROLE tcp -- anywhere anywhere tcp dpt:domain PAROLE tcp -- anywhere anywhere tcp dpt:http PAROLE tcp -- anywhere anywhere tcp dpt:pop3 PAROLE tcp -- anywhere anywhere tcp dpt:imap2 PAROLE tcp -- anywhere anywhere tcp dpt:https PAROLE tcp -- anywhere anywhere tcp dpt:submission PAROLE tcp -- anywhere anywhere tcp dpt:imaps PAROLE tcp -- anywhere anywhere tcp dpt:pop3s PAROLE tcp -- anywhere anywhere tcp dpt:ssh PAROLE tcp -- anywhere anywhere tcp dpt:5232 PAROLE tcp -- anywhere anywhere tcp dpt:2812 PAROLE tcp -- anywhere anywhere tcp dpt:http-alt PAROLE tcp -- anywhere anywhere tcp dpt:tproxy PAROLE tcp -- anywhere anywhere tcp dpt:8082 PAROLE tcp -- anywhere anywhere tcp dpt:8083 PAROLE tcp -- anywhere anywhere tcp dpt:webmin PAROLE tcp -- anywhere anywhere tcp dpts:40000:45000 ACCEPT udp -- anywhere anywhere udp dpt:domain ACCEPT udp -- anywhere anywhere udp dpt:mysql ACCEPT udp -- anywhere anywhere udp dpt:5232 DROP icmp -- anywhere anywhere DROP all -- anywhere anywhere Chain PUB_OUT (5 references) target prot opt source destination ACCEPT all -- anywhere anywhere Chain fail2ban-dovecot-pop3imap (1 references) target prot opt source destination RETURN all -- anywhere anywhere Chain fail2ban-pureftpd (1 references) target prot opt source destination RETURN all -- anywhere anywhere Chain fail2ban-ssh (1 references) target prot opt source destination RETURN all -- anywhere anywhere You have new mail in /var/mail/root root@serv14:/etc/dovecot#
Yesterday I had one error in the log files after you asked me to restart MySQL. Code: Feb 4 09:13:52 serv14 dovecot: auth-worker: Error: mysql: Query failed, retrying: MySQL server has gone away
This error is ok as it indicates that mysql was restarted while dovecot was connected to mysql. To ensure that this is not a firewall isue, please run: iptables --flush which will remove all rules until you reboot the server or restartthe firewall and try to connect to imap again.
