On Thu, Oct 21, 2010 at 09:26:46AM -0400, Charles Marcus wrote: > On 2010-10-20 10:18 PM, Denny Lin wrote: > > Postfix's address verification is also quite useful for popular domains > > like gmail.com, hotmail.com, yahoo.com, etc. > > If you mean you are using *sender* address verification on these > domains, you will eventually get blacklisted by them if your system has > much traffic from them. Most Mail Admins consider blanket SAV as an > abuse of their systems. > > SAV (sender address verification) should be used sparingly, and only > with domains/systems that are ok with you using it.
Oh yeah, I forgot to mention that. A better solution would be to check the rDNS or SPF record and do sender verification if it doesn't match. -- Denny Lin
