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[GH-ISSUE #678] Webmail: Authentication Failed #632

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opened 2026-02-27 11:12:45 +03:00 by kerem · 6 comments

kerem commented

2026-02-27 11:12:45 +03:00

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Originally created by @machinefixer on GitHub (Jan 29, 2015).
Original GitHub issue: https://github.com/modoboa/modoboa/issues/678

I've debugged this error for a while, it happens all the time once I try to use webmail interface, something like 'Password mismatch' or 'auth: Debug: client passdb out: FAIL' in my log file. But after I refreshed my webmail page by a couple of times the authentication come back to normal, and Modoboa works fine. It might be tiny configuration mistake, but pretty annoying. Maybe somewhere in Dovecot has a configuration item like 'xxx_timeout'?

Originally created by @machinefixer on GitHub (Jan 29, 2015). Original GitHub issue: https://github.com/modoboa/modoboa/issues/678 ![screen shot 2015-01-29 at 17 16 13](https://cloud.githubusercontent.com/assets/5358642/5955168/f76695bc-a7da-11e4-89a6-01449bd1a410.png) I've debugged this error for a while, it happens all the time once I try to use webmail interface, something like 'Password mismatch' or 'auth: Debug: client passdb out: FAIL' in my log file. But after I refreshed my webmail page by a couple of times the authentication come back to normal, and Modoboa works fine. It might be tiny configuration mistake, but pretty annoying. Maybe somewhere in Dovecot has a configuration item like 'xxx_timeout'?

kerem closed this issue

2026-02-27 11:12:45 +03:00

kerem commented

2026-02-27 11:12:46 +03:00

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@tonioo commented on GitHub (Jan 29, 2015):

Maybe an issue with your dovecot configuration?

@tonioo commented on GitHub (Jan 29, 2015): Maybe an issue with your dovecot configuration?

kerem commented

2026-02-27 11:12:46 +03:00

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@machinefixer commented on GitHub (Jan 30, 2015):

Thanks for replying! I've check all my dovecot configuration, since the problem happens occasionally, it can be some kind of "Timeout", I switched my local VPS to another which provide more stable web connection, then everything works fine after re-deploy modoboa.

@machinefixer commented on GitHub (Jan 30, 2015): Thanks for replying! I've check all my dovecot configuration, since the problem happens occasionally, it can be some kind of "Timeout", I switched my local VPS to another which provide more stable web connection, then everything works fine after re-deploy modoboa.

kerem commented

2026-02-27 11:12:46 +03:00

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@tonioo commented on GitHub (Jan 30, 2015):

Great. So I close this issue.

@tonioo commented on GitHub (Jan 30, 2015): Great. So I close this issue.

kerem commented

2026-02-27 11:12:46 +03:00

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@moufmouf commented on GitHub (Jun 19, 2015):

Hey Tonioo,

Sorry to bump this issue up but we are facing exactly the same problem.

The webmail fails completely randomly (maybe one in 5 requests...)

Also, when it fails, I can see this in the logs:

Jun 19 03:15:15 modoboa dovecot: imap-login: Disconnected (auth failed, 1 attempts in 2 secs): user=<admin@mailtest.thecodingmachine.com>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured, session=<JuUhM9wY+gB/AAAB>

I'm using the latest version of modoboa (1.3.3) that I tried to migrate from the virtual image provided.
I'm pretty sure this must be a configuration issue, but I have no clue on how to pinpoint it. Also, I tried to enable SASL on postfix, I don't know if this can be related. My /etc/dovecot/conf.d/10-master.conf file looks like this:

service auth {
  unix_listener auth-userdb {
    #mode = 0666
    #user = 
    #group = 
  }

  # Postfix smtp-auth
  unix_listener /var/spool/postfix/private/auth {
    mode = 0666
    user = postfix
    group = postfix
  }

  # Auth process is run as this user.
  user = $default_internal_user
}

Any clue how I could try to pinpoint the problem?

@moufmouf commented on GitHub (Jun 19, 2015): Hey Tonioo, Sorry to bump this issue up but we are facing exactly the same problem. The webmail fails completely randomly (maybe one in 5 requests...) Also, when it fails, I can see this in the logs: ``` Jun 19 03:15:15 modoboa dovecot: imap-login: Disconnected (auth failed, 1 attempts in 2 secs): user=<admin@mailtest.thecodingmachine.com>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured, session=<JuUhM9wY+gB/AAAB> ``` I'm using the latest version of modoboa (1.3.3) that I tried to migrate from the virtual image provided. I'm pretty sure this must be a configuration issue, but I have no clue on how to pinpoint it. Also, I tried to enable SASL on postfix, I don't know if this can be related. My /etc/dovecot/conf.d/10-master.conf file looks like this: ``` service auth { unix_listener auth-userdb { #mode = 0666 #user = #group = } # Postfix smtp-auth unix_listener /var/spool/postfix/private/auth { mode = 0666 user = postfix group = postfix } # Auth process is run as this user. user = $default_internal_user } ``` Any clue how I could try to pinpoint the problem?

kerem commented

2026-02-27 11:12:46 +03:00

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@tonioo commented on GitHub (Jun 19, 2015):

Hi,
the demo VM is pretty outdated now and I've not enough time to work on it. I suggest you install install a fresh server using newer versions.
Don't hesitate to contact me in private in you need help/more information.

@tonioo commented on GitHub (Jun 19, 2015): Hi, the demo VM is pretty outdated now and I've not enough time to work on it. I suggest you install install a fresh server using newer versions. Don't hesitate to contact me in private in you need help/more information.

kerem commented

2026-02-27 11:12:46 +03:00

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@orangejuicy commented on GitHub (Apr 2, 2016):

Hello. I have this issue after fresh install on ubuntu 14.04 with modoboa-installer. Modoboa version is 1.4.5.

Apr  2 22:22:17 mail dovecot: imap-login: Disconnected (auth failed, 1 attempts in 2 secs): user=<admin>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured, session=<wjxXQIYvMgB/AAAB>

Is this normal behaviour for Super Administrator account?

@orangejuicy commented on GitHub (Apr 2, 2016): Hello. I have this issue after fresh install on ubuntu 14.04 with modoboa-installer. Modoboa version is 1.4.5. ``` Apr 2 22:22:17 mail dovecot: imap-login: Disconnected (auth failed, 1 attempts in 2 secs): user=<admin>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured, session=<wjxXQIYvMgB/AAAB> ``` Is this normal behaviour for Super Administrator account?