On Wed, Sep 08, 2004 at 03:37:52PM +0100,
Tony Finch <dot(_at_)dotat(_dot_)at> wrote
a message of 26 lines which said:
We can't use either pra or mailfrom because they break forwarding.
Forwarding can be "repaired" with things like SUBMITTER or SRS (I
prefer SUBMITTER). SPF-classic breaks forwarding but SenderID may be
changed to repair it.