Hi,

One of our leads email addresses has been blocked due to bouncing.  It says the reason is smtp 550, potential spam.  This is a double opted in contact expecting the emails.  We sent 1 email to them with a ZOHO Survey integrated link, CRM says this email bounced but if it had they couldn't of used the link in the email to complete the Survey.

Who do I talk to about getting this unblocked?  I can't post the email in question here for GDPR reasons.