Co-Existing With Other Software

GreenArrow Engine can co-exist with other software. However, we do not recommend installing a control panel on the same server as GreenArrow Engine unless you need one for managing the server or other services that are unrelated to GreenArrow.

Here are some common services that GreenArrow may conflict with other software. If you have a conflict that is not listed here, please contact GreenArrow Technical Support for more information.

MTA

If your server comes with another MTA that you’re not using, we recommend disabling it. If you need to use another MTA alongside GreenArrow, then we recommend configuring both the other MTA and GreenArrow to only bind to one IP address so that they are not listening on the same IP. GreenArrow Engine will need to bind to port 25 (and possibly other default SMTP ports like 587, 465, or 901) on at least one externally accessible IP address.

POP3 Server

GreenArrow Engine’s POP3 server binds to port 110 on all active interfaces by default. This default port can be changed, or restricted to a single IP address if it conflicts with another POP3 server.

Web Server

If you’re running a non-GreenArrow web server, we recommend disabling it. If you need to run another web server alongside GreenArrow, then we recommend configuring both the other web server and GreenArrow to only bind to one IP address. We recommend configuring GreenArrow Engine’s web server to bind port 80 and 443 on at least one externally accessible IP address.

FTP Server

GreenArrow Engine does not come with an FTP server, but GreenArrow Studio does. GreenArrow Studio’s FTP server binds to port 21 on all active interfaces by default. This default port can be changed, or restricted to a single IP address if it conflicts with your FTP server.

PostgreSQL

If your server comes with a PostgreSQL installation that you aren’t using, we recommend disabling it.