I can't say I'm appreciating all the emails like the following "Mail Delivery
Failed: ..." that I receive each time I send to the list.

Is somebody able to fix it?

Cheers,
Gavin


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This message was created automatically by mail delivery software (Exim).

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

  pipe to | /home/corion/bin/sortmail.pl
    generated by corion@brother
    Child process of address_pipe transport returned 2 from command:
    /home/corion/bin/sortmail.pl

[...]