Yeah. Let's say I run my own mail server which is sendmail with a domain name
I want to send out email to email@example.com
It works fine cuz I'm using my isp smtp server
However, if I try to do the opposite which is from : firstname.lastname@example.org
send to email@example.com
it doesn't work. I can't receive any incoming email.
here's what I got from yahoo.com:
Hi. This is the qmail-send program at yahoo.com.
I'm afraid I wasn't able to deliver your message to the following
This is a permanent error; I've given up. Sorry it didn't work out.
Sorry, I wasn't able to establish an SMTP connection. (#4.4.1)
I'm not going to try again; this message has been in the queue too
Is that possible my isp blocks both port 110 and 25 not letting me run own mail server??