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Exchange 2003 SPF Record
Hi,
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)
Thanks
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)
Thanks
Microsoft Server Apps
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Rick Hobbs
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I followed the link and was able to create SPF record, but still unable to send out email to certain domains. I think it has to do with Reverse DNS. Correct if I am wrong, my ISP will be able to add reverse DNS entry right? (not network solution - who is hosting my domain)
Thanks!. Sorry I didn't get back to you sooner, but you should be able to enter the RDNS record at your ISP.