Email not being sent

We have been using manager almost around a year and find everything so perfect and thank you very much.

In email settings, as our email server is from our domain, we are not able to keep port as our wish, as there is only port 25 and 587 available in the manager.

Before we were able to send the emails directly from the manager.

This is the way things are now due to factors beyond the control of the developer. See Email transactions and reports | Manager.