At Sat Aug 2 03:12:05 2003, Robert Menschel wrote: > > MG>> hi, I just wanna ask what rule should I aply to stop mails that > MG>> have in header from=<> . > > M> That is not a good idea. :) Read with me from RFC 1123, section 5.2.9: > M> 5.2.9 Command Syntax: RFC-821 Section 4.1.2 > M> The syntax shown in RFC-821 for the MAIL FROM: command omits > M> the case of an empty path: "MAIL FROM: <>" (see RFC-821 Page > M> 15). An empty reverse path MUST be supported. > > 1) I've checked my corpus, 3+ months of email, and I don't find any "<>" > in any From header. Do I misunderstand the situation?
I've just grepped through my spam archive (2350 messages, starting in February this year), and found several: From: "News Info"<> From: "Dave Santa"<> From: "Bede"<> From: "News Info"<> From: "" <> From: "Site j"<> From: "" <> From: "News Info"<> From: "Aaron Lackey" <> My reading of RFC 2822 indicates that this syntax is invalid - an "angle-addr" may not be empty. (As distinct from RFC 2821, where it is permissible as part of an SMTP transaction.) Martin -- Martin Radford | "Only wimps use tape backup: _real_ [EMAIL PROTECTED] | men just upload their important stuff -o) Registered Linux user #9257 | on ftp and let the rest of the world /\\ - see http://counter.li.org | mirror it ;)" - Linus Torvalds _\_V ------------------------------------------------------- This SF.Net email sponsored by: Free pre-built ASP.NET sites including Data Reports, E-commerce, Portals, and Forums are available now. Download today and enter to win an XBOX or Visual Studio .NET. http://aspnet.click-url.com/go/psa00100003ave/direct;at.aspnet_072303_01/01 _______________________________________________ Spamassassin-talk mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/spamassassin-talk
