I have a shared email account accessed on a PC and a Mac.

The server details recently changed and I updated both computers, the PC works fine but the Mac keeps getting the message "Authentication failed because outlook doesn't support any of the available authentication methods" sending emails but receiving them is fine. The incoming and outgoing server details are the same and i am not using any authentication (SSL, SPA etc) as the PC is working fine it is not the server. I have tried every combination of settings.

I have rebuilt my identity, deleted the account and re-created it but still the same issue.

I am also fully updated with MS patches.

The MAC is running El Capital 10.11

Thanks

Martin