Hello,
I have a reseller account on linux server using DirectAdmin v1.50.1
I created many emails using a domain listed on this server, when I configure emails on Microsoft Outlook, I always have an error "450 Requested action not taken" at sending test, and I get a list of not sent emails at the end of day .
is this problem at my Server, or ISP problem? and what shall I check?
Thanks a lot for help.
I have a reseller account on linux server using DirectAdmin v1.50.1
I created many emails using a domain listed on this server, when I configure emails on Microsoft Outlook, I always have an error "450 Requested action not taken" at sending test, and I get a list of not sent emails at the end of day .
is this problem at my Server, or ISP problem? and what shall I check?
Thanks a lot for help.