Emails not sending

[dexter97]

I'm having issues sending emails. This morning, trying to send from webmail is returning the following error:

Message could not be sent to the following recipients: [redacted] (554 - 554 5.2.0 QkcHrxLJlsf2b Sender Denied (TT608)

Over Christmas, I had problems trying to send emails from webmail, Outlook and my phone. Webmail sorted itself out, I fixed Outlook by changing the settings, but I've never managed to get my phone to send since.

I'm receiving emails as normal.

[Ady-TalkTalk]

Hi jenmac55, please start a new topic the one you've added to is very old. 

Ady

[Jenmac55]

Hi not been able to send e mail due to error 554 5.7.1. Bounces back saying spam or I have been blocked. Did live chat for 2.5hrs. He admitted in the end it was on the webmail. I'm still not able to send it's so frustrating.

[dexter97]

Thanks for the advice. I logged into webmail from my work computer, so maybe that was the issue. Not the first time I've done that though, and I don't usually get this problem.

[Gondola · Accepted solution]

Hi @dexter97 

TT608 means that the TalkTalk Mail platform has detected multiple logins to your mailbox and such that the system thinks that your password has been discovered. As a result the mailbox has been restricted and a limit put on sending mail.

As a precaution in the case of a compromised password you should change and upgrade the password to lock out any unauthorised sign ins. The restriction on sending may last for up to 24 hours.

Did you have multiple devices signed in and are any using a VPN, perhaps as part of security software like Norton or AVG, for example? In the event that you were using a VPN and making multiple concurrent logins yourself then make sure the VPN is set to use a UK host server. Try to avoid having sign ins from multiple geographic locations e.g. from your home and at the same time from your work based VPN.

[dexter97]

Update:

Webmail now sending, so apparently a temporary glitch. It's the second time this has occurred in a month though, so hopefully it doesn't become a regular thing.

Still can't send from phone though.