- The SMTP server does not allow relaying unless you are sending email from a trusted IP or use proper authentication.
- Microsoft Exchange server: server is setup to block SMTP relaying.
- Some servers allow you to send email in
Need More Help?
Are you looking for a personalized customer support? Submit your question or Call our Toll Free Number to speak with ServiceDesk Plus MSP Expert who can offer a better solution for your requirements.
Submit a Ticket
Email : firstname.lastname@example.org
Toll Free : 1-888-720-9500