I think Talktalk is now responsible for pipex e-mail opportunities.
As a family we have two .pipex accounts.. Using webmail we can send and receive e-mails between the two accounts and can successfully send to our Talktalk accounts. However if I try to send from a Talktalk account to ONE of the pipex ones it bounces as undeliverable. The other pipex account is accessible most of the time.
I'm no technical expert but I don't know what's going on here.
Any ideas out there ?
It's good to have your report that you can successfully send from pipex to pipex and pipex to talktalk.
Talktalk to pipex works to one account but fails on another. Does it fail every time? What is the full bounceback error message? And this is sending from TalkTalk Mail to pipex using webmail not an email client?
The usual reasons are:
The error message is indicating that the mailbox is unavailable / mail is undeliverable.
I assume the recipient 'M' has confirmed it's not full. My understanding is that the capacity of the pipex mailbox is quite low on the pipex platform (100Mb).
Can 'M' sign in and send email out from the pipex email address and see that sent email in the Sent folder? This is to make sure the mailbox isn't locked and not so full that the user is barred from saving a sent email.
And you'll have checked that the email address you're sending to is spot on correct? I have checked the email address and it is a valid address and outwardly the mailbox tests ok. PS I have removed the 'hidden' email address from your post.