topic Re: Outgoing emails blocked "550 5.7.1 Reject for policy reason" in Email

Outgoing emails blocked "550 5.7.1 Reject for policy reason"

Ellyott — Tue, 05 Aug 2025 13:03:56 GMT

My outgoing emails are being rejected when they have pdf attachment.

A plain text email and one with jpg attachment leaves successfully but ones pdf are rejected for policy reasons. This is true for fresh emails and for replies when sent from outlokk or webmai..

The problem seems to have started since the begning of August.

Re: Outgoing emails blocked "550 5.7.1 Reject for policy reason"

kanya-TT — Tue, 05 Aug 2025 13:21:11 GMT

Hey there. @Ellyott. We are sorry this is happening. Have you received any comms about subscribing to Everymail.

Kanya

Re: Outgoing emails blocked "550 5.7.1 Reject for policy reason"

Ellyott — Tue, 05 Aug 2025 13:32:41 GMT

No I haven't

Re: Outgoing emails blocked "550 5.7.1 Reject for policy reason"

kanya-TT — Tue, 05 Aug 2025 13:48:06 GMT

Are you at home at the moment. Kanya

Re: Outgoing emails blocked "550 5.7.1 Reject for policy reason"

Ellyott — Tue, 05 Aug 2025 13:49:18 GMT

Re: Outgoing emails blocked "550 5.7.1 Reject for policy reason"

Ellyott — Tue, 05 Aug 2025 13:51:16 GMT

Please note that I am a long time TalkTalk broadband user and the email addresses are not subject to the new policy related to non-customers.

Re: Outgoing emails blocked "550 5.7.1 Reject for policy reason"

kanya-TT — Tue, 05 Aug 2025 13:54:16 GMT

So, you did receive those comms. Even though you are a long-time customer.

Kanya

Re: Outgoing emails blocked "550 5.7.1 Reject for policy reason"

Ellyott — Tue, 05 Aug 2025 13:55:10 GMT

No I didn't receive those comms. I saw it as a news item on some publication.

Re: Outgoing emails blocked "550 5.7.1 Reject for policy reason"

kanya-TT — Tue, 05 Aug 2025 13:58:56 GMT

Okay, you are not impacted with those changes particularly if you did not receive any comms.

Kanya

Re: Outgoing emails blocked "550 5.7.1 Reject for policy reason"

Gliwmaeden2 — Tue, 05 Aug 2025 15:50:19 GMT

Is it possible to get to the bottom of who messages containing .pdf files are not sending, @kanya-TT?

So back to the original question.

Re: Outgoing emails blocked "550 5.7.1 Reject for policy reason"

kanya-TT — Tue, 05 Aug 2025 16:02:55 GMT

Given the recent situation where many of our customers are facing email issues, I believe it's reasonable to inquire whether they are affected by this trend before we proceed with additional fact-finding questions, @Gliwmaeden2.

Kanya

Re: Outgoing emails blocked "550 5.7.1 Reject for policy reason"

Gliwmaeden2 — Tue, 05 Aug 2025 16:14:37 GMT

@kanya-TT, I understand that, but it's been a couple of hours and would be good to follow up the original enquiry before forum staff finish today.

It's clearly a separate issue as other email types are sending from the customer's address.

@Ellyott, are you still having problems sending out emails that contain .pdfs?

Re: Outgoing emails blocked "550 5.7.1 Reject for policy reason"

kanya-TT — Tue, 05 Aug 2025 16:17:20 GMT

I also understand, @Gliwmaeden2. But in light of how things have been we still ought to first get enough clarity so that we can assist accordingly. However, we have to wait for @Ellyott to respond back.

Kanya

Re: Outgoing emails blocked "550 5.7.1 Reject for policy reason"

Ellyott — Tue, 05 Aug 2025 16:29:22 GMT

I have tested again and the situation has not changed. Emails with PDF attachments are not sending. Emails with jpg gets through.

Re: Outgoing emails blocked "550 5.7.1 Reject for policy reason"

kanya-TT — Tue, 05 Aug 2025 16:30:35 GMT

But emails with no PDF's do go through right?

Kanya

Re: Outgoing emails blocked "550 5.7.1 Reject for policy reason"

kanya-TT — Tue, 05 Aug 2025 16:39:04 GMT

So, there might be some possible situations at play here.

It could be that the intend recipient may need to adjust their settings by whitelisting your email address on their account by
You may need to review your Authentication Settings by ensuring your server is properly configured with SPF,dkim and DMARC.

How are you currently accessing your emails. Is it by TT webmail or by a client app and what device are using.

Kanya

Re: Outgoing emails blocked "550 5.7.1 Reject for policy reason"

Ellyott — Tue, 05 Aug 2025 16:44:44 GMT

Emails without attachments get through to external emails.
I have sent to other TalkTalk email address with success
There is no client app involved.
I am currently located at my parent's house which alos has TalkTalk broadband managed by me.
I have tested from laptop Outlook and from TT webmail and its the same

Re: Outgoing emails blocked "550 5.7.1 Reject for policy reason"

Ellyott — Tue, 05 Aug 2025 16:45:56 GMT

The email has not been rejected by the recipient's email. It never leaves TT.

Re: Outgoing emails blocked "550 5.7.1 Reject for policy reason"

kanya-TT — Tue, 05 Aug 2025 16:51:44 GMT

You may need to review your Authentication Settings.

1. Log in to Your TalkTalk Account

Go to the TalkTalk website and log in to your account.

2. Access Domain Management

Navigate to the "Manage" section of your account.

Kanya

Re: Outgoing emails blocked "550 5.7.1 Reject for policy reason"

Ellyott — Tue, 05 Aug 2025 16:57:37 GMT

I cannot see a "Manage" option or Authentication Settings. The nearest thing is "My Security Settings" which do not have the option for authentication.

Please advise more detailed navigation.