Difference between revisions of "Dovecot"
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| − | Dovecot is a POP3/IMAP server that can also provide authentication for SMTP and other SASL services. | + | Dovecot is a POP3/IMAP server that can also provide authentication for SMTP and other SASL services. See also the [http://wiki.dovecot.org/HowTo/Fail2Ban Fail2Ban page on the Dovecot wiki]. |
{{Logging_Outputs}} | {{Logging_Outputs}} | ||
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With successfull logins, it doesn't print anything from "auth-worker". | With successfull logins, it doesn't print anything from "auth-worker". | ||
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| + | Dovecot-1.2.13, without pam (slackware), with TLS : | ||
| + | * Jul 31 13:53:08 email dovecot: imap-login: Aborted login (auth failed, 1 attempts): user=<someone>, method=PLAIN, rip=192.168.0.2, lip=192.168.0.1, TLS | ||
| + | * Jul 31 13:54:35 email dovecot: imap-login: Disconnected (tried to use unsupported auth mechanism): user=<someone>, method=LOGIN, rip=192.168.2.2, lip=192.168.2.1, TLS: Disconnected | ||
| + | |||
| + | (rip is the IP address of the client, lip is the IP address of the server) | ||
| + | Same results with "auth_verbose = yes". | ||
| + | |||
{{Failregex}} | {{Failregex}} | ||
Latest revision as of 14:09, 29 August 2010
Dovecot is a POP3/IMAP server that can also provide authentication for SMTP and other SASL services. See also the Fail2Ban page on the Dovecot wiki.
Dovecot-1.0.0 with pam. Other authentication mechanism probably produce different output.
- Jan 11 03:42:09 email dovecot: auth(default): pam(support@example.org,192.0.2.2): pam_authenticate() failed: User not known to the underlying authentication module
- Jan 26 22:31:37 email dovecot: auth(default): pam(dan,192.0.2.2): pam_authenticate() failed: Authentication failure
Dovecot-1.0.15 with sql, and "auth_verbose = yes":
- Jan 11 03:42:09 email dovecot: auth-worker(default): sql(janfrode@tanso.net,192.168.11.16): Password mismatch
- Jan 11 03:45:09 email dovecot: auth-worker(default): sql(someoneelse,192.168.11.16): unknown user
With successfull logins, it doesn't print anything from "auth-worker".
Dovecot-1.2.13, without pam (slackware), with TLS :
- Jul 31 13:53:08 email dovecot: imap-login: Aborted login (auth failed, 1 attempts): user=<someone>, method=PLAIN, rip=192.168.0.2, lip=192.168.0.1, TLS
- Jul 31 13:54:35 email dovecot: imap-login: Disconnected (tried to use unsupported auth mechanism): user=<someone>, method=LOGIN, rip=192.168.2.2, lip=192.168.2.1, TLS: Disconnected
(rip is the IP address of the client, lip is the IP address of the server) Same results with "auth_verbose = yes".
Failregex
The regular expressions below are proposed failregex for this software. Multiple regular expressions for failregex will only work with a version of Fail2ban greater than or equal to 0.7.6.
The tag <HOST> in the regular expressions below is just an alias for (?:::f{4,6}:)?(?P<host>\S+). The replacement is done automatically by Fail2ban when adding the regular expression. At the moment, exactly one named group host or <HOST> tag must be present in each regular expression.
Please, before editing this section, propose your changes in the discussion page first.
failregex = dovecot.*auth\(default\): pam\(.*,<HOST>\): pam_authenticate\(\) failed:
