On Fri, 7 Sep 2007 15:02:45 +0200 Alessio Cecchi wrote: > Some ISP use this trick like antispam solution: > > http://wiki.apache.org/spamassassin/OtherTricks
It's yet another half-baked(TM) solution to the spam problem. From my experience, more than 80% of the mail received by machines acting as secondary MX is spam. Based on this, it's an usual habbit to set up secondary MX records just to collect spam. > But the wiki page says that with qmail remote server you can have > some problem. > And in fact i have find that qmail in some situations is unable to > delivery the email in this situations. It's not quite a problem. If the primary MX is not available qmail-remote will retry to send the message later. > Why? Is qmail that have problem with the RFC? Yes, qmail-remote does not try to deliver the message to secondary MX(s). In this case the ISP using that completely stupid setup is responsible for the breakage caused by using fake primary MX records. -- Adi Pircalabu
