Domino Messaging-Router/SMTP

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Hi, Need your assistance urgently. In trying to restrict mail spamming on my mail server,i enabled DNS lookup tab for my domino server and this has really helped. One of our big clients is trying to send us a mail,but alas they dont have a Reverse DNS for their server,hence their mail is being rejected for policy reasons. Is it possible to explicitly allow them to send mail without disabling the DNS lookup tab. I use a domino R 5.0.9 . Thanks for your urgent assistance
ASKED: February 22, 2006  9:54 AM
UPDATED: August 4, 2006  9:23 AM

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Sure. Tell them to put in a reverse DNS for their server records and explain to them that it’s for their own good. Checking reverse DNS has been Standard Operating Procedure for some time now; any legit company should have it in place as a matter of course.

Otherwise, since checking DNS is an on/off process as far as I know, unless you can whitelist that particular company in some way, I think you are out of luck. I don’t believe Domino 5.x has the ability to manage white and black lists — you’d need to upgrade your servers to ND6 for that.

If I’m wrong, I’m sure someone else will correct me on this. You can also check the forums, technotes, etc. on IBM’s site for more information.

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  • KOCHUBABY
    I too agree with the same..Ask your client to enable reverse lookup of DNS. DNS is enabled by any company.. to avoid SPAM which you are very well aware of it. So its best to enable the reverse lookup on for their server so that the emails get passed under HELO and EHLO.
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