Fetchmail and postfix 'mail forwarding loop' - SOLVED

[vincent at acheson.uk.com]

This will hopefully save somebody hours of googling........

If using fetchmail with kolab, you may be collecting from an isp who uses
qmail.  Qmail puts a 'delivered-to' line into the mail header.  When
fetchmail passes such a mail onto postfix, postfix will read such a line in
the header, and throw up a 'mail forwarding loop error, and not deliver the
mail to the local user.

The solution is to place 'dropdelivered' in the .fetchmailrc file as per the
example which follows:

poll mail at yourdomain.uk.com proto POP3
user thisonedrovememad4hours at yourdomain.uk.com password foobar dropdelivered
is localuser1 at yourdomain.uk.com here
user foundtheanswer at yourdomain.uk.com password yippee@@ dropdelivered is
foundtheanswer at yourdomain.uk.com here