Debian Etch SOHO server, no X.
I have managed to install and setup/configure mgetty+sendfax - checked sending/receiving from shell.
I have managed to install setup/configure courier-mta using smarthost and courier-imap, with simply using pam authentication - checked, using squirrelmail on apache2 and fetchmail as mail delivery from different providers, I can send receive mails. The only quirk was smarthost configuration of courier, which is fall to create file under, courier's configuration directory /etc/courier/smtproute contain one row with smarthost domain ":smarthost.com".
I'm stucked on faxing, courier has courier faxmail capability which should be configured through /etc/courier/faxrc - unfortunatelly it has no default, some what working version, and is it about strange conversions around dialing numbers. After, markout first line with "rw^" , as suggested in faxrc itself I'm tried to fax, using usual 7 digits hungarian phone number, expand it to 10 digit using international area code (361 - Budapest) but I always has the same SMTP error:
513 - invalid domain name. The senders domain should be good, it is working for E-mails, nothing left, that 1234567@fax or 3611234567@fax is wrong.
Some one have a correct working configuration for example?

README.Debian for courier is talk about that root should enable faxing, and after talking about /etc/courier/faxrc which must be adited for this. But also need a FAXRELAYCLIENT entry at smtpaccess/smtpaccess.dat.
After installation I have an /etc/courier/smtpaccess/default file and an apropriate /etc/courier/smtpaccess.dat file, need to expand entry for localhost in /etc/courier/smtpaccess/default

127.0.0.1<TAB>allow,RELAYCLIENT,FAXRELAYCLIENT

run #makesmtpaccess
and voila, faxing is start working