DList

I have not seen this bounce before.  It is from a list that I operate -- wondering if it means that I am being blocked or the domain in South Africa?

# For arc.agric.za"><addressarc.agric.za>, Open (155.240.199.241) Error 4sec (553 Blocked by RBL spamhaus.messagingarchitects.)
arc.agric.za">addressarc.agric.za

-- 
Len Engel
Horizon Internet Solutions, LLC
www.horizon-internet.com
Boise/Los Angeles