I'm trying to change de envelope.from when resubmitting message to
postfix queue using milter.
For some reason this is not working as expected:
SENDMAIL="/usr/sbin/sendmail -i -f ${VERP_ADDRESS}"
$SENDMAIL "$@" <<EOF
$SIGNED_CONTENT
EOF
BR,
Rafael
Em ter., 10 de dez. de 2024 às 15:39, Wietse Venema via Postfix-users
<postfix-users@postfix.org> escreveu:
>
> Rafael Azevedo:
> > Hi Wietse,
> >
> > Thanks for the usual reply.
> >
> > We have a situation when we need to send emails in behalf of some
> > customers using different domain.
> >
> > My milter code (part of it):
> >
> > CONTENT=$(cat)
> > VERP_SIGNER=`echo "$CONTENT" | grep 'X-VERP' | awk -F'[:]' '{print $2}' |
> > xargs`
> >
> > if [[ $VERP_SIGNER == 1 ]]; then
> > SENDMAIL="/usr/sbin/sendmail -i -f ${VERP_ADDRESS}"
> > else
> > SENDMAIL="/usr/sbin/sendmail -G -i"
> > fi
> >
> > But when using -f ${VERP_ADDRESS} postfix keeps using original sender
> > from $CONTENT.
> >
> > Am I doin something wrong?
>
> By design (RFC 5321/5322), envelope.from and header.from can contain
> diffferent addresses.
>
> For example, this email message has different addresses in envelope.from
> (postfix-users-boun...@postfix.org) and header.from
> (postfix-users@postfix.org).
>
> If you want to to change both the envelope.from and header.from,
> then you need to change both the envelope.from and header.from.
>
> But I am not sure that listing the VERP sender address in the header
> is a good idea.
>
> Wietse
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