On Fri, Dec 15, 2006 at 10:20:50AM -0500, David F. Skoll wrote: > > ----- The following addresses had permanent fatal errors ----- > > <[EMAIL PROTECTED]> > > (reason: 556 Mail from nullsender not allowed (#5.7.1)) > > That machine is broken. See http://www.rfc-ignorant.org/policy-dsn.php
Indeed. Note, however, that this is usually done because the user is being joejobbed. In fact, you are doing him a service sending vacation message as a "bounce", because the vacation could have been triggered by the joejob too, so it is then (rightfully) being ignored. Also: lots of _other_ sites are doing sender verification, by connecting back to the mailserver of the (claimed) sender, and doing MAIL From:<> RCPT To:<[EMAIL PROTECTED]>. Now, the merit of this check is a whole debate in and of itself, but the fact is that it exists. Those users are going to find they cannot email to those sites. Most likely, the email just magically disappears (because it gets rejected for a sender callout verification failure, bounces, and then the bounce itself is rejected by the null sender blocking). I'd just ignore this issue, if I were you. The above [EMAIL PROTECTED] has problems enough already. > Basically, machines that reject mail from <> are ignorant of the RFCs > and deserve to be blacklisted. I would file a bug report with > [EMAIL PROTECTED] and [EMAIL PROTECTED], pointing them to the > rfc-ignorant.org site. Hmm, David, since when did you change your opinion on rfc-ignorant? :) > > I can't figure out how to make sieve add the correct name in the return > > path, so is there a way to make Mimedefang do it on the way out? > > Not easily, at least until Sendmail 8.14 is out. It will allow milters > to change the envelope sender (not that MIMEDefang supports that yet!) It can be done with mimedefang, just not very easy. In fact, it's ugly. You'll have to tell sendmail to discard the message, and then resubmit it to sendmail with another envelope sender. -- Jan-Pieter Cornet <[EMAIL PROTECTED]> !! Disclamer: The addressee of this email is not the intended recipient. !! !! This is only a test of the echelon and data retention systems. Please !! !! archive this message indefinitely to allow verification of the logs. !! _______________________________________________ NOTE: If there is a disclaimer or other legal boilerplate in the above message, it is NULL AND VOID. You may ignore it. Visit http://www.mimedefang.org and http://www.roaringpenguin.com MIMEDefang mailing list [email protected] http://lists.roaringpenguin.com/mailman/listinfo/mimedefang
