Hi Claudio, Yes you are right empty sender is required for bounce message but there must be some other work around to deal with such spammers who abuse emtpy sender.
Waht is that? Regards, Milind -----Original Message----- From: Claudio Jeker [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 30, 2005 1:50 PM To: [email protected] Subject: Re: problem with SANITYCHECK On Tue, Mar 29, 2005 at 04:23:05PM -0800, Andreas Stollar wrote: > Hi List, > > I noticed that some spammers have found a workaround for the sanitycheck > in qmail-smtpd. I most cases it works just fine, e.g. > > 220 mail0.speakeasy.net ESMTP > helo > 250 mail0.speakeasy.net > mail from: user > 554 mailfrom without @ is administratively denied > > But if I don't give it anything, it accepts the mesage, this is not good. > > 220 mail0.speakeasy.net ESMTP > helo > 250 mail0.speakeasy.net > mail from: > 250 ok > > -- or -- > > 220 mail0.speakeasy.net ESMTP > helo > 250 mail0.speakeasy.net > mail from: "" > 250 ok > > I am not able to adjust the regext rules in qmail-smtpd.c, but I am > hoping someone will know how to solve this problem. > You NEED to accept mails with empty sender address. That's how bounce messages are sent. I know a few spammers abuse the emtpy sender but you can not block just because of that. -- :wq Claudio
