Question : Relay Server Blocking Outbound Message

A client of mine is unable to send an email to someone in the Czech (across seas). I have included the Undeliverable Message, but for some background info: They are using Microsoft SBS 2003 which includes Exchange 2003. The mail is then going through our relay server which has Microsoft Server 2003 installed and Exchange 2003.

Here is the Bounce:

Your message did not reach some or all of the intended recipients.

Subject:  Test
Sent:     4/22/2009 4:49 PM

The following recipient(s) could not be reached:
[email protected] on 4/22/2009 4:49 PM

You do not have permission to send to this recipient.  For assistance, contact your system administrator.
Framework of `quaker-steak.com' domain denied your IP address.>


Can someone please help? Thanks

~Jake

Answer : Relay Server Blocking Outbound Message

That is brave, someone is doing a hard failure on SPF records for antispam. Wouldn't catch me doing that, as SPF record use isn't high enough.

Basically the error is self explanatory - your SPF records are not set correctly to allow that server to send email for your domain.

The remote server is rejecting the email and forcing your server to generate the NDR.

Simon.