Policy filtering with postfix

[Lefteris Tsintjelis]

Hi,

I am trying to setup policy but I keep on getting all these "????" in my log files.

postfix/policy-spf[15755]: : testing: stripped sender=owner at example.org, stripped rcpt=lefty at ene.asda.gr
postfix/policy-spf[15755]: : SPF ????:
smtp_comment=????????????????????????????????????????????????????????????????????????????????,
header_comment=???????????????????????????????????????????????????????????????????????????????????????????????? 
postfix/policy-spf[15755]: decided action=DUNNO 

Are all these "????" normal to show up in the maillog? Anyone has any idea what they are? I suspect it maybe an IPv6 problem. Can anyone please confirm it?

Thank you,
Lefteris