On 26/09/14 10:40, Always Learning wrote:
> EXDIR/hosts.spammer contains, inter alia,
>
> *charter.com
> *mo.charter.com
>
> Exim fails to match a persistent nuisance
>
> 71-14-255-2.static.stls.mo.charter.com
>
> when the condition is
>
> hosts = EXDIR/hosts.spammer
I assume it's because it can't get a hostname to do the match against.
Exim doesn't set the $sender_host_name variable until that name is
verified - in this case, the hostname does not exist. If the "hosts"
condition is basing the search off that, then it will have nothing to
search against. Run it through with exim -bh to see what it's trying to
match.
$ host 71-14-255-2.static.stls.mo.charter.com
Host 71-14-255-2.static.stls.mo.charter.com not found: 3(NXDOMAIN)
http://www.exim.org/exim-html-current/doc/html/spec_html/ch-access_control_lists.html#SECTaclconditions
"It can test IP addresses without doing any DNS lookups, but when it
reaches an item that requires a host name, it fails if it cannot find a
host name to compare with the pattern"
Not trusting a PTR until it can be confirmed to be valid makes sense to
me, or every spammer would just set their PTR to something trusted by
the target server.
