I also find this disappointing.dane wrote:No, there isn’t.
My current sonic FTTN with AT&T has port 25 is open in both directions.
After asking technical support for help, they got AT&T to open the port for me.
FTTN has a dynamic DNS address (DDNS) but the lease time is about 7 days long.
This makes it "static" for the most part. If my network goes down for a day or two then I get the same IP address when the network comes up again.