Diagnostic-Code: smtp; 553
We started getting bouncebacks when emailing our IT person last week. He has spent hours on the phone trying to resolve this. The case got moved to Tier 2 but no one has called him back.
Diagnostic-Code: smtp; 553 5.3.0 220.127.116.11 Your message was rejected for possible spam/virus content.Please ask your email provider to visit http://emailadmin.registeredsite.com for resolution.