Any help?

Hello Ian, as you can see in the screenshots of my firt post, the IP were added in the list after selecting the "Denied relay rights" check. Here you have the Activity and the Debug logs (the IP 162.13.162.XXX is in the list): Log – Activity: 05/15/18 13:15:03 SMTP-IN 167F117B6A44450D92F0E45279B31D2...

Hi, You need to inspect the SMTP activity and debug log files and ensure that the incoming IP address that produces the 551 error is the correct IP address you have added the SMTP privileged IP's list. Yes, it is in the list. What it makes me think that it will not work is the sentence "These setti...

Hello, we use MailEnable Standard Edition 8.54. Recently we have configured an SPF record to let another system to send e-mails using one of our e-mail address in FROM field. Everything works well when the receiver is a non-local address. But when the e-mail goes to a local address, it returns an er...