3 ms·
No, they don't. 465 and 587 should always be open. If not, complain, you have crippled service you pay for. Other MX might reject you on port 25 due to a resid
by gsich 3y ago
No, they don't. 465 and 587 should always be open. If not, complain, you have crippled service you pay for.
Other MX might reject you on port 25 due to a residential IP, but that is not an ISP block.