topic Re: Sender address rejected: You are blocked sending mail in Email

Sender address rejected: You are blocked sending mail

MikeAllen1 — Mon, 27 Oct 2025 13:44:56 GMT

I am having problems sending emails.

I receive the following from the server

xxxx replaces the actual email address used.

Message could not be sent to the following recipients: [xxxxxxx@xxxxx.com>] (554 - 554 5.7.1 <xxxxxxxxx@talktalk.net>: Sender address rejected: You are blocked sending mail
)

This happens via webmail, email client and phone.

Incoming emails are fine.

According to another post a tool is needed Talktalks end to check if this is a hard block that needs lifting at Talktalks end.

Can someone help to get this lifted.

We have spent 2hrs already last week on the phone to two different people who could not sort this for some reason.

Re: Sender address rejected: You are blocked sending mail

Divsec — Mon, 27 Oct 2025 14:06:14 GMT

Hi @MikeAllen1 your post has been escalated and you should hear today.

Re: Sender address rejected: You are blocked sending mail

amahle-TT — Mon, 27 Oct 2025 14:13:35 GMT

Hi there @MikeAllen1, we are sorry for this, and we will look into it for you. Please confirm if you are unable to send to a specific recipient or everyone.

Re: Sender address rejected: You are blocked sending mail

MikeAllen1 — Mon, 27 Oct 2025 14:17:10 GMT

It is to everyone. This has been going on for a week now and two different people at TalkTalk phone support have been unable to sort this. Can we get this sorted this afternoon please. I see from other posts on here that other people have had the same issue. From what I can see you need to unblock something from your end.

Re: Sender address rejected: You are blocked sending mail

MikeAllen1 — Mon, 27 Oct 2025 14:31:52 GMT

Its is everyone.

Re: Sender address rejected: You are blocked sending mail

amahle-TT — Mon, 27 Oct 2025 14:38:42 GMT

Thank you for confirming, as there are no reported outages on our end diagnostics are required. Kindly contact our full fibre team and they will be able to assist you further:

03451720074
Mon-Fri: 9am-7pm; Sat: 9am-6pm; Sun: closed