[Dovecot] dovecot: imap-login: Aborted login

Adnane mls at adnane.me
Mon Jul 22 23:50:48 EEST 2013


here is the dovecot -n dump

dovecot -n
# 2.0.19: /etc/dovecot/dovecot.conf
# OS: Linux 3.8.13-xxxx-grs-ipv6-64-vps x86_64 Ubuntu 12.04.2 LTS ext3
auth_mechanisms = plain login
mail_location = maildir:/var/mail/vhosts/%d/%n
mail_privileged_group = mail
passdb {
   args = /etc/dovecot/dovecot-sql.conf.ext
   driver = sql
}
protocols = imap pop3 lmtp
service auth-worker {
   user = vmail
}
service auth {
   unix_listener /var/spool/postfix/private/auth {
     group = postfix
     mode = 0666
     user = postfix
   }
   unix_listener auth-userdb {
     mode = 0600
     user = vmail
   }
   user = dovecot
}
service imap-login {
   inet_listener imap {
     port = 0
   }
}
service lmtp {
   unix_listener /var/spool/postfix/private/dovecot-lmtp {
     group = postfix
     mode = 0600
     user = postfix
   }
}
service pop3-login {
   inet_listener pop3 {
     port = 0
   }
}
ssl = required
ssl_cert = </etc/ssl/certs/dovecot.pem
ssl_key = </etc/ssl/private/dovecot.pem
userdb {
   args = uid=vmail gid=vmail home=/var/mail/vhosts/%d/%n
   driver = static
}
root at mailer:~# telnet localhost 143
Trying 127.0.0.1...
telnet: Unable to connect to remote host: Connection refused


netstat -la -pute | grep dovecot
tcp        0      0 *:pop3s *:*                     LISTEN      
root       12974 5098/dovecot
tcp        0      0 *:imaps *:*                     LISTEN      
root       12989 5098/dovecot
tcp6       0      0 [::]:pop3s [::]:*                  LISTEN      
root       12975 5098/dovecot
tcp6       0      0 [::]:imaps [::]:*                  LISTEN      
root       12990 5098/dovecot

I dont like the "port = 0"  but thats what was mentionned in the tutorial


so I changed /etc/dovecot/conf.d/10-master.conf
/

service imap-login {
   inet_listener imap {
     port = 143
   }
...
}

service pop3-login {
   inet_listener pop3 {
     port = 110
   }
...
}


now

netstat -la -pute | grep dovecot
tcp        0      0 *:pop3s                 *:*                     LISTEN      root       162828      8341/dovecot
tcp        0      0 *:pop3                  *:*                     LISTEN      root       162826      8341/dovecot
tcp        0      0 *:imap2                 *:*                     LISTEN      root       162845      8341/dovecot
tcp        0      0 *:imaps                 *:*                     LISTEN      root       162847      8341/dovecot
tcp6       0      0 [::]:pop3s              [::]:*                  LISTEN      root       162829      8341/dovecot
tcp6       0      0 [::]:pop3               [::]:*                  LISTEN      root       162827      8341/dovecot
tcp6       0      0 [::]:imap2              [::]:*                  LISTEN      root       162846      8341/dovecot
tcp6       0      0 [::]:imaps              [::]:*                  LISTEN      root       162848      8341/dovecot

  telnet localhost 110
Trying 127.0.0.1...
Connected to localhost.localdomain.
Escape character is '^]'.
+OK Dovecot ready.
user adnane at mailer.adnane.me
+OK
pass mypasseword
+OK Logged in.
LIST
+OK 0 messages:

root at mailer:~# telnet  mailer.adnane.me 143
Trying 2001:41d0:52:200::326...
Connected to mailer.adnane.me.
Escape character is '^]'.
* OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE STARTTLS AUTH=PLAIN AUTH=LOGIN] Dovecot ready.
1 login adnane at mailer.adnane.me mypassword
1 OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS MULTIAPPEND UNSELECT CHILDREN NAMESPACE UIDPLUS LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS] Logged in
2 logout
* BYE Logging out
2 OK Logout completed.
Connection closed by foreign host.

/
/but for thunderbird I got this in logs

Jul 22 22:32:53 mailer dovecot: pop3-login: Disconnected (tried to use 
disabled plaintext auth): rip=196.217.182.199, lip=5.135.151.43
Jul 22 22:36:04 mailer dovecot: pop3(adnane at mailer.adnane.me): 
Disconnected: Logged out top=0/0, retr=0/0, del=0/0, size=0



On 07/22/2013 08:36 AM, Steffen Kaiser wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> On Mon, 22 Jul 2013, Adnane wrote:
>
>> I think the issue is with authentication
>>
>> root at mailer:~# tail -f /var/log/syslogJul
>> Jul 22 03:34:41 mailer dovecot:imap-login: Disconnected (no auth 
>> attempts): rip=41.251.155.145, lip=5.135.151.43, TLS
>> Jul 22 03:35:02 mailer dovecot: imap-login: Disconnected (no auth 
>> attempts): rip=41.251.155.145, lip=5.135.151.43, TLS handshaking: 
>> Disconnected
>> Jul 22 03:35:02 mailer dovecot: imap-login: Disconnected (no auth 
>> attempts): rip=41.251.155.145, lip=5.135.151.43, TLS handshaking: 
>> Disconnected
>> Jul 22 03:35:03 mailer dovecot: imap-login: Disconnected (no auth 
>> attempts): rip=41.251.155.145, lip=5.135.151.43, TLS: Disconnected
>
> There is "no auth attempts", so you do not have an issue with 
> authentication.
>
> Because of the "TLS handshaking: Disconnected" it looks like the 
> connection gets cut during the initial TLS handshake. To debug this, 
> first increare logging, then try from localhost without encryption, e.g.:
>
> telnet localhost 143
> 1 login "loginname" "password"
>
> and watch the human friendly output. Terminate the IMAP connection via
>
> 2 logout
>
> Maybe that client does not like your SSL cert and drops the connection 
> thereof? Or maybe a firewall thinks it has to fiddle in, e.g. change 
> Thunderbird to use SSL on port 993 instead of STARTTLS on 143.
>
> Kind regards,
>
> - -- Steffen Kaiser
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