On Mon, Dec 21, 1998 at 09:07:29AM -0700, Robert Tarrall wrote:
4) Deny relaying, which sendmail 8.9.1a will do by default (has worked great for us so far), and 5) Deny access to dial-access.att.net (and dialsprint.net, da.uu.net, pub-ip.psi.net, etc) which is what we're doing here just because we get so much spam directly from such dialup accounts these days.
If it's a forgery and the mail is not touching NAC.NET servers, neither step is useful, although relaying should be shut off and SMTP access denied from ISP dialup banks as a general rule. -- Steve Sobol [sjsobol@nacs.net] Part-time Support Droid [support@nacs.net] NACS Spaminator [abuse@nacs.net] Proud resident of Cleveland Heights, Ohio, the coolest place on earth. http://www.ClevelandHeights.com