When using webmail, you may receive the following error message:
Error: SMTP Server rejected email. Returned:503 sender not yet given
Don't Panic!
This is very easy to fix, simply follow the instructions below:
1
Login to the affected webmail account.
2
Click on the Preferences option at the top.
3
Click on the Account Preferences option.
4
In the Reply To field, enter a valid email address.
5
Scroll down to the bottom of the page and click on the Save Settings button.
The issue will now be fixed and you will no longer receive the error message.