Incentive server: what is it trying to talk to (which ports?)

[DontCopyThatFloppy]

I have an incentive server that never starts properly, and logs this every few minutes:

"Error in subscriber task: No reachable IPs found in any DNS records."

General DNS and the wallet sync is working. When DNS doesn't work I'm pretty sure I've seen the log show the hostnames it failed to resolve. But if DNS does work (but a connection can't be established)... it doesn't log what IP:PORT it had an issue with?

This is in an environment where I believe some outbound ports may be blocked. If I knew what port the incentive service was trying to talk to (in addition to the trusted node on 8444) I could ask about it (and maybe get it opened).

[MichaelTaylor3D]

In this case, its port 8444, it couldnt connect to a fullnode. It tries to connect to these DNS introducers to find fullnodes on the network to talk to: https://github.com/DIG-Network/dig-chia-sdk/blob/main/src/blockchain/FullNodePeer.ts#L15