Sending mail using mobile data

[#1]

I can’t send Plusnet emails from my Apple iPhone 7 when using mobile data. I get an error message about the server rejecting some or all of the addresses. However if I am connected to Wi-Fi the emails go with no problem. I can also send gmail emails using mobile data. It is only Plusnet emails that are affected. I can receive emails with no problems using data. Can anyone help please?

[#2]

Moderators Note

Duplicate post removed

[#3]

@XO you need to set authentication for the outgoing server ( relay.plus.net ) using your Plusnet username & password.

[#4]

Sorry I am not particularly good at tech but if it works okay on Wi-Fi then doesn’t that mean all the mail settings are okay?😊

[#5 · Accepted solution]

@XO  no it doesn't. When you are connected to wifi, you are on the PlusNet network and you do not need to authenticate ( but you can ) with the outgoing server. When you are not on a Plusnet network i.e a mobile network then you MUSt authenticate with your account details.

[#6]

I did what you suggested and all is now working as it should. Thanks for your help!