I can't send email from Vodafone webmail. I get an SMTP Error 451; Sender address rejected: Server configuration error.
Please advise how to resolve this - I suspect it is a problem at Vodafone's end as none of my settings influence webmail.
Can you direct message me your details? Such as email address.
I also are having the same issue.
Webmail emails will not send - SMTP error 451
Any ideas why?
Can either of you provide me details such as email address?