Duplicated emails in Inbox (POP).

[#1]

For quite a few days now many emails I receive are delivered THREE times to my Inbox:

I can't see how to attach the Outlook items here.

If someone could provide me a contact email I could attach all three emails from the latest set for review.

I tried phoning the help desk but they just fobbed me off which annoyed me quite a lot.

David

[#2]

Can you please verify that this is not a problem with your email application by logging into the mailbox using webmail to see if the emails are there once or three times.  https://webmail.plus.net

I would suspect that this is an issue with the POP3 email client - it has forgotten which emails IT HAS DOWNLOADED previously.  Which client are you using?

[#3]

Three copies in Webmail as well.

See attached screen shot

[#4]

Ah, three copies of ONE email from ONE sender having two different sent times.  I'd look for a problem with the one sender / their email service.

Look at the email headers to confirm that all three emails are actually different emails (different email IDs).

[#5]

FWIW I am using MS Outlook (MS Office Pro 2021).

[#6]

Id doubt that it is the sender as this problem is happening for loads of different email sources - not just Microsoft.

Here are the email ids for each email - as you can see they are identical:

Message-Id: <c9df7767-bd25-4ad1-adfa-e5d9e0add2ca@az.eastus.unknown.microsoft.com>

Message-Id: <c9df7767-bd25-4ad1-adfa-e5d9e0add2ca@az.eastus.unknown.microsoft.com>

Message-Id: <c9df7767-bd25-4ad1-adfa-e5d9e0add2ca@az.eastus.unknown.microsoft.com>

So I'd say the problem is very definitely in your email servers

D.

[#7]

Any update on this guys?

[#8]

This is rather beyond a joke - I'm getting perhaps 20 or 30 emails that being duplicated like this every day so I have delete the duplicates manually and it is a total pain the ****.

I tried to report this vie the help desk and just got fobbed of.  Is there anyone here who can raise this to the attention of someone who can do something about this.

Please ...

David

[#9]

Hi David,

Are these all from the same sender?

Are you running Plusnet's SPAM filter in the mail settings?

Are these emails being sent DIRECT to your Plusnet mailbox, or are they being redirected there?

Are they being sent to @youraccount.plus.com or to a personal domain name?

@bobpullen 

Is it possible to determine if these emails are being sent repeatedly (by the sending service) of if they are being processed repeatedly within?

Does this have any connection with the variously observed premature disconnection on the in-bound MX servers which has been known to cause duplicated submissions by the external MX.

[#10]

No they are NOT from the same sender, from almost all senders around the planet.

No I am not running plusnet spam filter - I use desktop Outlook 2019 which has its own spam checker.

They are being redirected by Zen - I will ask them

Personal domain

>any connection with the variously observed premature disconnection on the in-bound MX servers

That would certainly cause this problem!!!

David

[#11]

Hi David,

This is has been seen before with third party redirection servers. AIUI the way the MX connection message transfer terminates can lead to some mail forwarders thinking the transmission failed when in fact it was successful. Therefore the redirecting service retries the submission (at varying back off intervals). Such would cause exactly what you are experiencing.

The use or otherwise of the server side spam service changes the technology stack used for the inbound MX platform. It would be helpful to know the MX service reported for your account.plus.com and personal domain names. Use nslookup if you know how or look up MXtools.

There might also be merit in turning on the server side spam service (set it to minimal) and see if the alternative MX platform eliminates the issue for you.

Referring the issue to your forwarding service provider to determine why they are sending the email 3 times (does that figure ever vary?) would be a logical move.

[#12]

Here you go:

Non-authoritative answer:
perdrix.co.uk   MX preference = 10, mail exchanger = mailcluster.zen.co.uk
Non-authoritative answer:
perdrix52.plus.com      MX preference = 10, mail exchanger = mx.core.plus.net

No it isn't always three copies, sometimes I get one (as I hope), other times 2, 3 or even more (5 is the worst so far).

Enabling server side spam service - how do I do that?

David

[#13]

Member centre, manage my mail, spam settings.

So your personal domain forwards to your Plusnet account.plus.com mail address. Has Zen come back to you on the forwarding issue?

[#14]

Correct - not yet heard back from Zen

Your Spam handler is turned off and I remember why now - it was bouncing emails from free.fr without a by your leave.   Given that I frequently correspond with a couple of guys at free.fr I can't turn that on.

[#15]

You could whitelist the domain.