> -----Messaggio originale----- > Da: John Rudd [mailto:[EMAIL PROTECTED] > > Giampaolo Tomassoni wrote: > > Hi everybody, > > > > anyone knows of a SA plugin to score mails based on challenging the > sender > > e-mail? > > > > I don't mean C/R, but instead just attempt an SMTP session in order > to see > > if the source mailbox is known to the sending domain's MX. If it > isn't, the > > plugin applies a score to the e-mail. > > > > I know I could do something like this in my postfix, but this way I > would > > totally reject e-mails carrying a wrong From: header. Since some > people seem > > to be a bit dyslectic in writing its own e-mail address, I would > prefer not > > to reject unless there are some other reasons too (i.e.: the mail > hits some > > other SA rules). > > > Doing it at the MTA is called "Sender Address Verification",
Oh, yes. That's it. Tank you: I couldn't recall its name. > and isn't > considered to be that much better than C/R (it doesn't clutter a > forged-sender's mail box, but it can bog down a forged-sender's mail > server with verification requests). Well, it may be. I know, however, that a lot of people is doing this at the MTA level in order to reject mails with forget sender. Also, SAV's drawbacks may probably be mitigated by caching the results. > I wouldn't expect a sender verification plugin for SA to be any better > liked than doing it at the MTA level. I don't mind to do something more polite with MXes or better effective than its equivalent at the MTA level. I would like not to trash incoming mails solely because they failed a SAV check, thereby I would need a SA plugin for this. Giampaolo
