Enable SMTP Port 587 on Exim

Most of the ISP block port 25 for outgoing SMTP. To enable Port 587 on exim, add this configuration to Exim’s configuration file.

Alternatively, with latest exim configuration file, uncomment the line below and you might want to remove 465.

After that, save your configuration and restart exim service.

Test on Port 587

After exim service has restarted, make a telnet test to port 587

Connected? If yes, it means Exim on SMTP Port 587 is enabled now.