On 6 Apr 2018, at 8:08, Martin Gregorie wrote:
I'm getting a lot of SORBS lookups rejected due to an "unexpected RCODE". Is anybody else seeing these?
I'm sure someone is...There are none of those where I see. If the "unexpected RCODE" is SERVFAIL, it was likely transient on their end. If it was REFUSED then you may need to whether you might be hitting whatever the volume caps are (I have no idea what the SORBS volume caps are.)