4 ms·
SMTP has and is almost blocked everywhere to dissuade spam.
by jonprobably 8mo ago
SMTP has and is almost blocked everywhere to dissuade spam.
- dwedge 8mo agoPresumably not on the SMTP servers they were connecting to. There are millions of IPs with port 25 open, without them email wouldn't work, so I'm not sure what you mean
- einr 8mo agoThey probably mean that port 25 is blocked on consumer ISPs/residential IP blocks to prevent malware from running an smtpd on an infected home computer or router (which used to happen a lot), but on a higher level of course no one blocks SMTP.