Hi all,
I’m looking to set up a fresh instance of RT - which ports need to be open on the firewall for RT to run correctly ?
incoming 22 - ssh for remote management
incoming 80/443 - for web access
outgoing 25 - for smtp sendmail
am I missing anything ?
You will definitely want Incoming 25 for SMTP as well. In order to respond to a ticket via email, RT must be able to accept the email message. Otherwise, RT processes everything via HTTP/HTTPS, so your config looks good.
Best bet is to test it when you’re done, and you probably don’t want to expose SSH to the public Internet.
You don’t necessarily have to open up port 25 inbound, that’s only required if the host running RT is also running a mail server to handle inbound RT emails. But if you don’t run an MTA on this host, you need to open at least one of 110/tcp, 143/tcp, 993/tcp or 995/tcp, along with 25/tcp - all outbound - to allow some form of mail fetching using e.g. getmail(1) and then mail sending using an MTA of some sort.
-Adam