Great product btw.
I had an issue earlier installing on a fresh ubuntu server that had IPV6 disabled. Mail.log was full of port 10023 connection refused entries. Apparently, the way it’s configured it’s trying to bind to ipv6 and when it’s not there postgrey isn’t starting.
To fix the problem I edited /etc/default/postgrey and changed:
POSTGREY_OPTS="--inet=10023"
to
POSTGREY_OPTS="--inet=127.0.0.1:10023"
Everything is fine now. My question is will this change be persistent or is mailinabox going to overwrite my change at some point in time?