I have a problem now when i receiving emails from outside the company. here is what i know now:
emails sent and received inside network work fine
outgoing emails sent work fine
incoming emails received don't work, but i can see the traffic hanging out in the firewall and server is not accepting the connection, unsure how to check on server if there is a connection that is active
I do get notifications on phone when emails are sent, but i cant send them from phone inside or outside the network wifi or 4G.
i deleted the smtp connector and recreated basic connector.
restarted everything on network except 8 port dumb switch, maybe the issue?
i have internet on all computer and alias are all intact.
dns records are unchanged dns servers are still the same
no windows updates, nor major hardware changes
mxtoolbox is OK, canyouseeme.org is OK.