Plusnet email stopped working on EE 4G Network

[Hazel74]

I have Plusnet Broadband and also EE 4G. 

So my Plusnet email suddenly stops sending outgoing emails on EE 4G from yesterday afternoon.  If I change back to Plusnet Broadband, it goes through.  This happens on both Outlook 2007 on my laptop and on my Samsung Mobile phone.

I phoned EE and they checked me out for IP address being blacklisted and they said no.  I was then cut off and can't get back through 😞

Anybody else having this problem?  I have played around with port numbers to no avail. 

[Kirigaya_Kazuto]

Does web access work? 

outlook 2007 is very old. I would recommend you upgrade to a newer version and retry

[Hazel74]

Nothing work with Outlook 2007. 

The problem is with my mobile too, and its brand new.

Yes web access works, this is purely an email problem affecting Plusnet and EE.

[Kirigaya_Kazuto]

No, I mean if you log in to Plusnet web mail - does it work from there?

Does the email leave your outbox? Do you get an NDR

[XRaySpeX]

OL 2007 isn't behind this problem.

What have you put as the Outgoing Server settings (all of them) in your email client obscuring your name?

[Hazel74]

I was able to send test emails from Plusnet webmail this morning, however they have not appeared in the Sent items.  To be honest I don't think webmail is functioning properly, but that just might be a symptom of the slow broadband (why we are moving to EE 4G).

Sorry I am not sure what NDR is?

[Hazel74]

Outgoing settings are:

relay.plus.net

Outgoing port: 25, encryption None.

I have tried fiddling around with the ports as per various suggestions to no avail.  I have changed the Out going port to 587 but that did not work. 

[XRaySpeX]

NDR = Non-Delivery Report, commonly known as a "bounce".

[XRaySpeX · Accepted solution]

Port 25 is insecure & may only be used when connecting over PN BB.

What encryption did you have with Port 587?

Use either:

• Port 587 with STARTTLS. or
• if you can't do that, Port 465 with SSL/TLS.

[Hazel74]

Not getting those.  The emails are delivered.  The emails sent when I am on Plusnet Broadband and won't send on EE4G.  They were sending up until around 4pm yesterday afternoon.  Plusnet say they know of no issue that would cause this.