Hello, I read the man but it's not so clear to me https://man.openbsd.org/spamd#SYNCHRONISATION a) I chose unicast synchronisation but I don't know which port should I open on the firewall ? Is it going to use the spamd-cfg service ?
b) The synchronisation section mention a key and there's an option -K regarding that key but in the example the -K option is not used. So it's not clear. c) It's not clear which instance is going to contact which. Is there a master/slave relationship ? What if one IP is WHITELIST on one instance and BLACKLIST on the other. Also should I use the -Y option on both instances ? Both are going to try to start a tcp session ? d) The message digest is calculated in md5 ? e) Should I specify the -M option on all instance or just on the low priority MX, which IP adress should I specify the one on that host or the remote MX Thank you
