Quoting Jithesh AP <jithesh...@gmail.com>:
I have my port 465 smtps/587 (submission) working, so do i need to
keep port 25 open?
You need to open port 25 in order to receive mails on our server.
I am asking this because when i try to telnet gmail then it does not
work, so was wondering if blocking port 25 will stop all my incoming
mails or not?
If I'm not wrong, Google is using different servers for incoming and
outgoing mail. Maybe you've just been trying an outgoing server.
To try it out i did telnet gmail like below
telnet gmail-smtp-in.l.google.com 25
it just said trying and did not work
Then i sent a mail from gmail to my mail ID after blocking port 25
and I did not receive the mail, dont know where it went :(
Google will keep trying to deliver mail. Once you open port 25 again,
you'll receive the test mail after a few minutes.
Michael
