On Tue, 2007-10-30 at 00:53 +1030, Tim wrote: > On Mon, 2007-10-29 at 09:25 +1100, Simon Slater wrote: > > Just on the technical side, what actually causes the bounce? If my > > allocation on the ISP is full I understand that. Otherwise is it > > their spam filtering > That's one likely reason (your mailbox being too full at the time). It > could also be that the entire ISP's mail system was too full or too > busy, from time to time. Or there was a networking problem between your > ISP and the list. > > If your ISP uses greylisting, it rejects initial postings expecting the > sending server to try again, later. Some senders will take the initial > rejection and never try again. Some will try again later, but the > "later" could be minutes, hours, or days later. If the ISP uses really > crap greylisting, it might reject the resend, too. > > There's other anti-spam techniques that can backfire, too. If they > don't like the look of the mail (mail not addressed "to" one of their > users, as list mail isn't; the same message being received by many of > their users; mail coming from lists, etc.). Some spam filtering is > less-than well thought out. > Thanks Tim. -- Regards Simon
