Security Basics mailing list archives
Re: spam-filtering policy
From: "Thomas Choi" <tchoi () nortel com>
Date: Thu, 21 Dec 2006 04:26:33 -0500
Mike Peppard wrote:
One problem with this approach is that most spams these days are sent with a forged sender address. Personally, I'd suggest whitelisting IP addresses instead.I'd also recommend the white list be specific to individual email accounts and your employees have an easy way to add or remove entries from their white list.
My guess is that their mail server was caught sending spam and was listed on a third party blacklist that the recipient's organization was using. However, I agree that the sender should contact the recipient's e-mail administrator and work with them to determine why their mail cannot get through.It could be an auto reply from your company that triggered the list or it could be that you're an open relay, or perhaps you're not giving an spf per RCF4408 or a combination of problems that triggered an alert. Being from Asia as you are, you might want to let their email administrator know that banning that whole IP range will limit their ability to do business.
Current thread:
- spam-filtering policy cc (Dec 13)
- Re: spam-filtering policy Frynge Customer Support (Dec 13)
- Re: spam-filtering policy Mike Peppard (Dec 14)
- Re: spam-filtering policy Micheal Espinola Jr (Dec 15)
- Re: spam-filtering policy Thomas Choi (Dec 21)
- Re: spam-filtering policy Micheal Espinola Jr (Dec 25)
- Re: spam-filtering policy Devdas Bhagat (Dec 18)
- Re: spam-filtering policy Thomas Choi (Dec 21)