Can't send emails after iOS 16.1update

Using iPhone 12 max pro updated current 16.1 iOS

a few days ago error received cant send mail due to pass word and email check settings

all checked with provider virgin and all correct

have In installed and reinstalled and can receive mail but still same error !

can any one assist who has had similar

this has only occurred over last 2 days same issue on iPad and MacBook Pro on linked iOS mail

[Edited by Moderator]