SMTP 5.1.2 Error when sending an email, What does it mean?
SMTP 5.1.2 Error message indicates the domain name is incorrect or doesn't exist in the address the message was sent to.
Prolateral Consulting Ltd
Bramingham Business Centre, Enterprise Way, Luton, Bedfordshire, LU3
VAT No. GB 814 3886 16 | Company Reg No. 4676923