Cannot send lineone.net emails from Mail app on Iphone (receive ok)

[crispcg]

I cannot send lineone.net emails from Mail app on Iphone.  I receive emails ok and can send via webmail.  

I've checked my outgoing settings:

Hostname: smtp.talktalk.net

User name: my email address in full

Password: confirmed correct as webmail login

Use SSL: ON

Authentication: Password

Server Port: 587

[Gondola]

How are you getting on? Do you require any assistance? Or can we close this topic?

I'd appreciate your time to let us know. Thank you.

[Gondola]

Have you upgraded the password? If deemed weak then the SMTP servers may decline to send any mail. What send error message do you see?