Tag: authentication

• SPF (Sender Policy Framework) Support

  • March 2021
  • • Control Panel
    • Email
  • • authentication
    • email

• Mail returned with 5.7.1 Rejected by SPF

  • August 2022
  • • Email
  • • authentication
    • dkim
    • spf
    • srs

• Error 553

  • March 2021
  • • Email
  • • 553
    • authentication
    • email