On 17/03/2008, Jeroen van Aart <[EMAIL PROTECTED]> wrote: > Thought you'd like to know. > > To quote > http://projects.puremagic.com/greylisting/whitepaper.html?view=markup:
A source that's 5 years old... > > "One issue is that some MTA software (Exim for example) attempts to > limit the problem of forged sender addresses by attempting to verify > that the claimed sender of an email is a valid address by doing an SMTP > callback before accepting mail. Since it is desired to minimize the > traffic when a mail may be rejected, the best course of > action would be to issue a tempfail after the RCPT command. However, in > the case of a SMTP callback, doing so at that point may cause our > outgoing mail to be delayed necessarily." > > I don't think exim does that by default (anymore?). It could get you > blacklisted someone wrote here recently. Exim never has done callouts by default - which is confirmed by the Exim documentation referenced in the original article (Exim v 4.10). Not much to see here...... Peter -- Peter Bowyer Email: [EMAIL PROTECTED] -- ## List details at http://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
