You don't need to touch qmail at all. You only need to include a TXT record in your DNS. This record tell which STMP servers can send mail from your domain.
The SMTP administrators that want to use SPF will install an SPF filter in their server. When a mail from your domain arrives, they read this specific DNS record from your domain to decide what to do.
Read information here
There is a complete documentation and useful links there.
Yes. Thank you ! I just add TXT as in openspf.org says to my DNS. But still my spf not known. I dont know either they use cache so my DNS not update, but my problem about 'yahoo and google not know my domainkey' now they change to 'Good'. I'll try SPF again tomorrow. regards, -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org