Use single FQDN to connect IMAP users to correct mail server

Discussion in 'Installation/Configuration' started by 30uke, Sep 12, 2023.

  1. 30uke

    30uke Active Member HowtoForge Supporter

    I did notice that a hosting provider uses a single FQDN for multiple hosting servers running IMAP and SMTP.

    In my mail client I can configure mail.domain.ext as the IMAP and SMTP servers, and use my email address and password to authenticate via ports 993 (IMAP) and 587/465 (SMTPS). The email address and the password are stored on one of the hosting servers which has a different FQDN (eg sv1033.somedomain.ext).

    I would like to know how this is called and how this works.

    Edit: I did find this:
    But still need to wrap my head around this matter as it looks to be rather complex. Does anyone have any suggestions?

    Last edited: Sep 12, 2023
  2. Th0m

    Th0m ISPConfig Developer Staff Member ISPConfig Developer

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