Emails to TalkTalk accounts blocked

[HarHols]

Hi - I work for a UK-based company and we have noticed that emails from us to our "Talktalk" customers are not getting through. Seems to have started in the last 10-14 days, and these are customers who we've been dealing with for months/years so it's a relatively recent problem.

Our emails are not making it to their spam folders, and we are not receiving any "unable to deliver message" reports either - they just vanish.

These emails are not being sent by a service like sendgrid: They are being sent by individual staff members (e.g john@companyname.com  ) from our Microsoft-hosted exchange. I have spoken to the company that provides our MS accounts, and they couldn't suggest anything...

Luckily I (or rather my wife!) is a previous TT user so I've been able to create a forum account - is there anyone that can look at this please?

Thanks!

[Ady-TalkTalk]

And the sending addresses you can't receive from? 

Ady

[Davidandvictoria]

added

[Ady-TalkTalk]

Hi David,  please add the full sending and receiving emails in Private Notes in your community profile and I'll raise the fault ticket for you.

Ady

[Davidandvictoria]

Please raise it as a fault 

Regards

David

[Ady-TalkTalk]

The 7 day scan shows nothing. I'll have to raise a fault ticket for this. Please provide the full sending addresses of the mailboxes you cannot receive from. I'll add them all to the fault ticket. 

Ady

[HarHols]

Thanks Gondola - I think I have done this correctly now - appreciate your help.

[Gondola]

Hi HarHols 

Please put the domain info requested into your Community profile, Personal information, Private notes and save changes. Let me know when you've done that. Ady-TalkTalk will be able to pick up the info and pass it forward for you.

You can Community Private Message me with the domain info and I'll see if there is any advice I can offer. I won't need individual local parts of email addresses.

[HarHols]

Thanks Gondola - I can confirm that the customers are positively opted in and we aren't getting any bouncebacks. Would you suggest that I should try and contact TT directly with the domain info?

[Gondola]

Hi @Davidandvictoria 

Just a one-off issue or ongoing? Problem with a single TalkTalk Mail email address?

[Davidandvictoria]

I’m also having a similar issue with the following failed reply:-

Delivery to the following recipients failed permanently:

  * ***************@talktalk.net

Reason: There was an error while attempting to deliver your message with [Subject: "*******"] to *************@talktalk.net. It has been in queue too long, and will not attempt delivery again.

[Ady-TalkTalk]

I've added this to our list of those needing a postmaster to contact. 

Ady

[Gondola]

TalkTalk will wish to know the From: domain, the sending email domain, the Return-Path: email domain and that all customers are positively opted in to receiving your mail messages and you get no bounceback error mail delivery notification.