[Dovecot] /etc/passwd userdb and long usernames

Nicolás Reynolds fauno at endefensadelsl.org
Wed Jun 4 13:17:30 UTC 2014

hi! i've configured dovecot to lookup usernames in /etc/passwd and it's
working ok but it's having some problems retrieving info when the
username is longer than 32 chars (i know it isn't recommended but
everything seemed to work ok except for the hardcoded limit in

i found this on logs showing extra characters on the home field:

is there a limit on username length?  i "solved" it by setting 

  auth_username_format = %0.30u

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