On Wed, Jan 29, 2003 at 12:18:27AM -0700, Bob Proulx wrote: > Colm MacC?rthaigh wrote: > > This won't cover everything though, I posted to bugtraq twice on > > saturday and ever since I've had a constant stream of vacation > > messages and mail bounces. It seems a a lot of MTA installations > > out there are incorrectly bouncing to the from address in the > > header. > > No, the problem is that they are responding to 'Precedence: bulk' and > 'list' messages. They should not do that. They should not be > responding to list messages at all. But many people are using the MS > autoresponder and it is completely broken in that regard.
That's the vacation messages, which I get. But the bounces worry me, I received all manner of what should be SMTP errors directly to the from adress in the header insteead of the ESMTP envelope from. My own guess if the problem arise from the number of shoddy "firewall" products out there which proxy inbound mail for an MTA. It's typically these which actually mail bounces rather than returning with an SMTP error (because the firewall has no knowledge of the deliverability of the address). >From testing one or two of them, this appeared to be what was happening for me anyway. -- [EMAIL PROTECTED] PubKey: [EMAIL PROTECTED] Web: http://devnull.redbrick.dcu.ie/ ------------------------------------------------------- This SF.NET email is sponsored by: SourceForge Enterprise Edition + IBM + LinuxWorld = Something 2 See! http://www.vasoftware.com _______________________________________________ Spamassassin-talk mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/spamassassin-talk
