Craigslist rejecting Zoho mail

Craigslist rejecting Zoho mail

 Tried to respond to a craigslist.org posting & received:

This message was created automatically by mail delivery software.

 A message that you sent could not be delivered to one or more of its recipients. This is a permanent error.

 

xxxxxxxx@craigslist.org Invalid Address, ERROR_CODE :554, ERROR_CODE :5.7.1 <sender1.zohomail.com[72.5.230.95]>: Client host rejected: Blocked_due_to_excessive_spam_complaints._See:_http://www.craigslist.org/about/terms.of.use xabd-19