On 2006-03-17, Ricardo Kleemann wrote: > Hi, > > Does courier support verifying envelope sender address? I get a ton of DSNs > due to spammers hitting the server, and when bounces are generated back, I > get a DSN for invalid users. > > Is there a way for messages to be rejected based on invalid sender? >
Recent versions of courier provide SPF support and backscatter surpression. While SPF gives you a possibility to "authenticate" the senders server, backscatter supression surpresses DSN double bounces. Please have a look an the courier manpage for further information. In case of SPF the sender domain needs to set up a dns record, see http://spf.pobox.com/ . -- Georg ------------------------------------------------------- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642 _______________________________________________ courier-users mailing list [email protected] Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
