Port 25 filters - how many here deploy them bidirectionally?
Bob Martin
bob at buckhorn.net
Sun Jan 9 16:17:27 UTC 2005
Suresh Ramasubramanian wrote:
> .. and if it has been tried, have you noticed any issues with this?
>
We have been doing bidirectional port 25 filtering for sometime now. We
have not seen this behavior, nor anything like it.
-snip-
> Two posts about this in several months - but still, enough of a trend
> for me to wonder how widespread this behavior is.
>
If it works, it will become very wide spread before long.
This may or may not be related, but we have seen a sharp decline in spam
attempts from our dial up pool since Sept 2004.
Bob Martin
More information about the NANOG
mailing list