Why can I receive email but CANNOT Send?
Posted by Administrator on 24 December 2009 10:48 PM
People can receive email but not send
We are seeing this on a daily basis from our customers. People who could send email yesterday can't send it today. ISPs are blocking third party mail servers to prevent spam through their network. You can confirm by calling up your ISP and ask them if they are blocking third party SMTP port 25.
There are two workarounds:
1. You can change the outgoing (SMTP) port to 26 to bypass ISP filtering
2. You can use your ISP SMTP mail server setting (ie smtp.telus.net, etc)