I have a Windows VPS and I am able to send SMTP emails using webmail (horde) however I can not send it using any client Outlook etc. I am pretty sure my settings are correct. I have followed the following steps
However, if you follow the 2nd link the issue that people are facing are exactly the issue that I am having. I checked my windows firewall and port 25 is open for connections. I have a MX record for mail.mydomain.com.
Bottom line, it is working correctly when I use the webmail client that is installed on the server but does not work with an external client. Can somebody please help??
Solved! Go to Solution.
Make sure you enable that port on your mail server. For example I am using the default mailEnable server. So go to mailEnable > servers > localhost > services and connectors > SMTP then right click and properties then go to inbound tab and then click on Settings... for Port Settings and in that check mark the submission port to allow listening to port 587. Hope that helps.
In my case I had to go in Plesk --> Mail --> What to do with mail for non-existent users * --> Select "Forward to address" (instead of Reject) --> click on [Apply], and the emails were sent successfully.