Hi guys.
We are dealing with RBL not working.
We have zen.spamhaus.org as one of the RBL's (priority 1).
This IP is reported as spam/blacklisted
http://mxtoolbox.com/SuperToolX.aspx?action=blacklist%3a38.68.18.194&run=toolpage
Is this result ok or not?
Image may be NSFW.
Clik here to view.
we also take a look that we don't have any DNS issues. We had exactly the same behavior as on this post "https://social.technet.microsoft.com/Forums/office/en-US/1252eb3d-949c-4cc3-a1d7-dc08f0bdd372/rbl-not-working-on-exchange-2013-edge-transport" but we have resolved this by changing forwarders on DNS and now it resolves just fine.
After that we have restarted transport service on Exchange 2013 EDGE.
Edge is on CU11.
Any other hints to check why RBL is not working ok?
With best regards
bostjanc
