In the appropriate ACL (connect, mail, rcpt - I tend to do rejections/deferrals in rcpt, so I can see the from/to that were presented), try this:
defer condition = ${if eq {$host_lookup_failed}{1} {yes}{no}} On Tue, 5 Oct 2010, Jim Pazarena wrote: > Date: Tue, 5 Oct 2010 12:38:44 > From: Jim Pazarena <e...@paz.bz> > To: exim-users@exim.org > Subject: [exim] rejecting un-resolvable IPs at smtp time > > In an effort to reduce spam, I would like to defer (rather than outright > refuse) reception > on any message that comes from a server without a PTR. > > I am not sure how to create an ACL to check for a non-existent > PTR/unresolvable IP. > I haven't found in FAQs this question. > > Advice would be appreciated. > Thanks, > > > -- -------------------------------------------------------- Dave Lugo dl...@etherboy.com No spam, thanks. Are you the police? . . . No ma'am, we're sysadmins. -------------------------------------------------------- -- ## 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/