The server response was: Authentication Required (VM401) on a MacBook

[IM17]

hi  I have seen threads for this and changed my passowrd etc

I cannot send emails only receive them - the error message is 

The server response was: Authentication Required (VM401)

I have unticked the automatic and tried to put in the password which is will not save - this is becoming a huge issue now - i have nto been able to do this for days - i work form ome and need emails

[IM17]

to update it will not verify or password

[goslow]

Have you set up an app password for your email client and are you using the server settings all as per info below?

https://www.virginmedia.com/help/broadband/manage-email-account