Thanks for the suggestion but I have just tried what you mentioned but still same error in the headers:
Received-SPF: Temperror (SPF Temporary Error: DNS Timeout) identity=mailfrom; client-ip=209.85.216.182; -- View this message in context: http://postfix.1071664.n5.nabble.com/SPF-configurations-tp73872p73905.html Sent from the Postfix Users mailing list archive at Nabble.com.
