ThunderBird - the server may have gone down

Discussion in 'ISPConfig 3 Priority Support' started by inside83, Mar 30, 2016.

  1. inside83

    inside83 Member


    I have a strange problem and I know this is not ThunderBird support but I thought to give it a try.
    One of my clients has a mailbox 17 GB big and lately he's been having problems with ThunderBird, saying 'The server disconnected. The server may have gone down or there may be a network problem'.
    Mail get sent but it don't get saved in the Sent' folder. When using webmail (roundcube) there is no problem at all. All the other mail users on the same server have no issues at all.
    What could it be?

    The server, of course, being ISPconfig.
  2. florian030

    florian030 Well-Known Member HowtoForge Supporter

    Did you check your logfiles?
    You can try to increase mail_max_userip_connections and restart dovecot afterwards
  3. inside83

    inside83 Member

    Could you please tell me where to look for logs and where to increase mail_max_userip_connections?
    Nevermind, I just added:
    mail_max_userip_connections = 50
    at the end of
    and restarted Dovecot.
    I first went for 20, but then increased it to 50, just to be sure.
    Seems to be working fine for now.
    Thank you!

    I just read about statistics plugin for Dovecot here:
    Could you, please, tell me how to configure it?
    Last edited: Mar 30, 2016
  4. till

    till Super Moderator Staff Member ISPConfig Developer

    Did you try the examples from their wiki?
  5. inside83

    inside83 Member

    Actually no.
    I'm not sure if the user is 'vmail' or something like 'ispconfig_vmail'.
    And, most important, I don't know where to start, what file should I edit.
  6. till

    till Super Moderator Staff Member ISPConfig Developer

    The email user on an ispconfig system is vmail. I did not use this plugin so I cant tell you more then what's written on their page.

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