E-Mail to Fax Gateway with a DUS.net account

Setup-e-mail-to-fax-with-dusnet

# Goal: Send an PDF Attachment to an catchall E-Mail Adresss with the fax number LHS
# like +49123456778@myfax.example.com and have it processes as a Fax message.
# You need: an dus.net account and the crypto token for the subject-line-auth
# an catchall e-mail account like *@myfax.example.com with an own homedirectory
# This script will rewrite the e-mail target and subject and forward it to DUS.net.

1) Create a <USERHOME>/.procmailrc
LOGFILE=procmail-for-fax.log
VERBOSE=YES

:0 wf
* ^To:.*@myfax.example.com
|<USERHOME>/bin/faxtomail.sh
:0c
* !^FROM_MAILER
! faxversand@fax.dus.net
 
 2.) Create <USERHOME>/bin/faxtomail.sh
#!/bin/sh

echo "$(date +%F%-H:%M)" >> /tmp/faxtomail.log
# Replace To-Line
cat -                                                                                           \
| sed -e 's/To:.*[<\ ]\(.*\)@\(.*\)$/To: \1@fax.dus.net/'                                       \
| sed -e 's/Subject: \(.*\)$/Subject: XY12345:*ACDEFG12345YOURDUSNETTOKEN/'