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Postfix Documentation
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Try turning off chroot operation in

A common mistake is to turn on chroot operation in the file without going through all the necessary steps to set up a chroot environment. This causes Postfix daemon processes to fail due to all kinds of missing files.

The example below shows an SMTP server that is configured with chroot turned off:

    # =============================================================
    # service type  private unpriv  chroot  wakeup  maxproc command
    #               (yes)   (yes)   (yes)   (never) (100)
    # =============================================================
    smtp      inet  n       -       n       -       -       smtpd

Inspect for any processes that have chroot operation not turned off. If you find any, save a copy of the file, and edit the entries in question. After executing the command "postfix reload", see if the problem has gone away.

If turning off chrooted operation made the problem go away, then congratulations. Leaving Postfix running in this way is adequate for most sites. If you prefer chrooted operation, see the Postfix BASIC_CONFIGURATION_README file for information about how to prepare Postfix for chrooted operation.

Postfix Documentation
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