I’m using something like telnet smtp.yahoo.com 25 and it comes back as not being able to connect to host on port 25. I don’t have port 25 blocked anywhere. I turned off the firewall and even opened up port 25 on the hardware firewall router. Any ideas? If I ping it I can connect.
Many ISPs are blocking outbound port 25.
I cannot connect either. That is not the yahoo server that I am supposed to be using.
Hmm, I cannot connect from a work system either, and I know that is not blocked. So maybe smtp.yahoo.com is blocking smtp connections itself.
Thanks for the reply. After searching on google, I found the answer. You’re right, the web hosting provider blocks port 25.
This had been driving me absolutely nuts. I was making all kinds of firewall port forwarding rules on my own firewall, etc. Turned out for naught.
When I discovered the correct port for the sending email via smtp with the web host, then I could send the mail. They forgot that part of the documentation and omitted that part in their Python code example. UGH
Thanks again…I think you helped me out yesterday.