On Sat, Apr 03, 2004 at 10:52:27PM -0600 or thereabouts, Scott Jones wrote:
On Saturday 03 April 2004 15:58, Gary wrote:
That wouldn't work if you are trying to email certain ISPs (such as AOL) that block "dynamic IP ranges" of plenty of ISPs from sending mail direct to their customers.
yes it does work if you set your MTA, eg, postfix, sendmail, or qmail to relay through his ISP's SMTP for those specific domains such as aol.com, otherwise use his standard MTA to send for those not listed... this is done in the smtp routing file of MTAs.
It still wouldn't work in this case, as AT&T blocks outbound tcp/25.
agreed, the point is moot in this case, but the above may apply to others whom do not use a dialup, and may still be blocked by AOL, etc unless going through their ISP SMTP server.
Regardless, the number of mail systems accepting connections from dynamic IPs is quickly shrinking (the system I admin, for one; using
yes, very true.
the SORBS dynamic IP blocklist alone has cut the incoming flow of spam and viruses to my system by about 70%).
I currently block several dialup IP blocks in my own RBL, as well as those servers I manage, but have not tried SORBS... will check that out.. -- Gary