Outgoing server SMTP is not working as a default to several accounts, just one at a time
Can receive emails from several accounts-no problem. Can only send emails from the account that matches the same email address - smtp.talktalk.net (Default) which is set up as the Outgoing Server, supposedly default for all accounts. If I change the Outgoing Server to one of the other email accounts - smtp.talktalk.net (Default), then I can send emails from that account but again not from the any other account without always getting the attached error message. Something has changed as I have previously been able to send from each account without a problem.
Alla svar (1)
TalkTalk has probably changed their policy so that each account must send on an smtp server that has the same User Name and password as the sending account. Previously, you could probably send from any talktalk account on the same, Default, smtp.
Tools/Account Settings, select an account in the left pane, then check Outgoing Server (SMTP) in the lower right pane. Make sure the selected smtp server has the same User Name/password as the sending account. Edit or Add smtp servers if necessary in Outgoing Server (SMTP) at the bottom of the left pane of Account Settings.