I inspect it, then inject it into the delivery system:
formail -s procmail -d PSE < untwit.mbx &
And all of the From headers are supplemented with a second header with MY
local address - AND escaped. How can I stop this from occurring on
redeliveries?
formail -b to not escape
formail -f to not generate a From_
(I presume you were referring to From_ rather than From: )
Cheers,
Stan