On Thu, 13 Jul 2017 16:00:14 +0000
Charles Amstutz Top-Posted:
> Hello,
>
> For the inexeperienced, what is the difference between lashback and
> lastexternal.
lashback is just a label, the difference is between
eval:check_rbl('LASHBACK', ...
and
eval:check_rbl('LASHBACK-lastexternal', ...
The former checks all the IP addresses outside your trusted network,
the latter only checks the last-external IP address, i.e. the MX
handover.
If a dynamic IP address gets into a blocklist, it may get
reassigned to many other devices before it's delisted. Most blocklists
are lastexternal because a device with a dynamic address shouldn't be
delivering direct to MX in the first place.
