EffEffTee
asked on
Exchange 2003 SP2, SPF issue when sending mail
Hello
I get this error when sending to one particular recipient (thousands of others work fine!!)
#5.5.0 smtp;550 Your email was rejected due to an SPF issue. Either your SPF is validating that you are sending from an un-authorised SMTP server or your SPF record is corrupt (#5.7.1)
I read somewhere that it could be the PTR records in DNS being incorrectly configured, but I'm not sure if this is the case.
any ideas?
thanks,
I get this error when sending to one particular recipient (thousands of others work fine!!)
#5.5.0 smtp;550 Your email was rejected due to an SPF issue. Either your SPF is validating that you are sending from an un-authorised SMTP server or your SPF record is corrupt (#5.7.1)
I read somewhere that it could be the PTR records in DNS being incorrectly configured, but I'm not sure if this is the case.
any ideas?
thanks,
ASKER
I manage DNS internally.
Would it make any difference if we were using a smart host?
Would it make any difference if we were using a smart host?
ASKER CERTIFIED SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Some Spam filters require fully valid SPF records associated to a domain.
Use this website to generate a SPF record that is valid
http://old.openspf.org/wizard.html