On Fri, 2010-06-25 at 22:47 +1200, Nathan Ward wrote:
Of course, you should probably not be using port 25
for submission, or
if your mail provider has RBLs running on their submission port then
something isn't quite right.
Also, surely RBLs should be consulted to decide whether to accept mail
from an unauthenticated client, as opposed to you, who is presumably
an authenticated client.
Yes.. if you are authenticated then really they shouldn't be looking at
any RBL for rejection. A lot of public access points will block 25 to
stop this type of thing happening (Stopping Infected Machines) and still
allow port 587 (the smtp submission port which IMHO people should be
using with SMTP Authentication).
Not saying that AirNZ are doing it right, just saying that your mail
provider could likely be doing it better :-)
Though, to be honest, I'd be surprised if a more or less public
connection like that isn't listed in the XBL, given the number of
random hosts that must come through it spewing out garbage.
I wish more ISP's would list their Entire Dynamic Dialup and Dynamic DSL
Ranges on the Spamhaus PBL with non removal and their Static IP Ranges
on the PBL with Self Removal) and then alot less spam would come in from
these ranges. (not that much target spam comes from NZ IP Addreses, just
Alot of providers are doing it . for example
Which is listed on the PBL with self removal but some of it is dyanmic
(looking at the RDNS so i could be wrong) so maybe it could be split
into parts to be listed in the PBL still but some able to be removed and
some not being able to be removed.