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troubleshooting Question

Exchange 2003 SPF Record

Avatar of ntran80
ntran80 asked on
Microsoft Server Apps
3 Comments1 Solution906 ViewsLast Modified:

We are unable to send email to certain domains, this is the error:
Subject: Undeliverable:
The e-mail system was unable to deliver the message, but did not report a specific reason.  Check the address and try again.  If it still fails, contact your system administrator.
            <mail.mydomain.com#4.0.0 smtp;450 <recipient address>: Recipient address rejected: Valid DNS required on connecting IP (external IP Address for our Exchange) [05NAPB0BUS00]>

We're using MX Logic to filter out email. I contacted MxLogic Support. They said I need to add a SFP record to my external DNS and this told to add "v=spf1 ptr include: mxlogic.net -all" as our SPF record.

Any ideas what the syntax would be for me to add to my external DNS (host by Network Solutions)

Avatar of Rick Hobbs
This problem has been solved!
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