I resolve same problem:
1 Use header checks in main.cf
header_checks=regexp:/etc/postfix/header_checks
2. Edit and map header_checks file with line:
/^Subject:.*(fax...)/ FILTER filter_fax:dummy
3.Edit master.cf with filter_fax line:
filter_fax unix - n n - 15 pipe
flags=Rq user=faxfilter null_sender=
argv=/var/spool/filter/faxfilter -f f...@yourdomain.xx -- ${recipient}
4.Create one user for filter files
5.Create faxfilter file owned by create user in /var/spool/filter
6.Edit faxfilter file with
sed -e 's/^From:.*/From:<f...@yourdomain.xx>/g' -e
's/^Subject:.*fax....../Subject:Fax newname/g' in.$$ | $SENDMAIL "$@"
The key for solve this problem is the sed command,this is command for best
replace
Gaby
