Issue CAN'T SEND MAIL TO DIFFERENT SERVER Client host rejected: Access denied

[ramaiswara098]

Hello,
So my company used to use mailchannel as relayhost, and just now, they not planned to continue the subscription, I already remove everything regarding mailchannel on the configuration. Like on mx record, spf record, and also relayhost value on /etc/postfix/main.cf
I use digital ocean droplet with centos 7. I think first since port 25 is banned, so I use our own host as relayhost with port 587.

any one can help ?

 

[Kaspar]

Do you get the "Client host rejected: Access denied" response with every email you try to sent to different recipients?

If I am not mistaken the "Client host rejected: Access denied" error is often caused by some issue(s) on the receiving server.

 

[ramaiswara098]

Yes, I am getting that for every email with different server, already try to send mail to a few user with a few mail provider, but still like this