Are you actually trying to send mail from your own smtp server? You mention apache and pihole which are completely unrelated.
Check the error. You want www.hexbear.net instead
Guessing you're not ipv6 only, but strace could still be of help: https://www.raspberrypi.com/news/host-your-own-mastodon-instance-on-a-raspberry-pi/
ziddey
joined 1 year ago