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Email received but sender get "Undelivered Mail Returned to Sender" after 5 days – Plesk

I manage a server with Plesk 12.5 since a couple of years.

Everything (emails, websites, etc.) works perfectly with our main domain (let’s call it myfirstdomain.com).

Since a couple of weeks, I added a new domain (let’s cal it myseconddomain.fr) and everything seems to work too (emails and websites), except the following error: when a sender sends an email to us, he receives the following error after 5 days:

This is the mail system at host myfirstdomain.com.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

              The mail system

 <[email protected]>: Message can not be delivered at this time
Reporting-MTA: dns; myfirstdomain.com
X-Postfix-Queue-ID: DC0B1702585
X-Postfix-Sender: rfc822; [email protected]
Arrival-Date: Tue,  5 Mar 2019 21:18:00 +0100 (CET)

Final-Recipient: rfc822; [email protected]
Original-Recipient: rfc822;[email protected]
Action: failed
Status: 4.2.1
Diagnostic-Code: x-unix; Message can not be delivered at this time

De: XXX XXX <[email protected]>
Objet: Testing title
Date: 5 mars 2019 à 21:17:58 UTC+1
À: Fabrice Troilo <[email protected]>


Testing body

You can see that the reporting-MTA is myfirstdomain.com, so maybe there is confusion between the two domains?

Here is our SPF:

"v=spf1 a mx include:_spf.google.com ip4:XX.XX.XX.XX ~all"

I will try with this update for the two domains:

"v=spf1 +a +mx +a:myfirstdomain.com +a:myseconddomain.fr include:_spf.google.com ip4:62.210.16.40 ~all "

Also, the email address is simply forwarding to a gmail address.

Do you please have any clue to look at?

Tags:

2

Answers


  1. 0

    If you can send mail from the domain, but not receive it, it’s not related to SPF. SPF authenticates when you send mail, not receive it.

    Have you ensured that an MX record is set up for the secondary domain?
    You can test this using the terminal on Linux or macOS with host -t MX myseconddomain.fr
    If you are on Windows, then open a command prompt, type nslookup. Then when in nslookup, switch to query MX types with set q=mx and press enter. Then enter your domain myseconddomain.frand press enter.

    If the MX records looks correct, then it must be some configuration in Plesk. We can test this by trying to deliver mail ourselves with telnet.

    Open a terminal/command prompt and type telnet <myserverIP> 25 and press enter. This connects to your mailserver. It should respond with a line beginning with 220, and it’s hostname. Then you can try and deliver a simple test mail, let’s say from [email protected]

    EHLO example.NET 
MAIL FROM:<[email protected]> 
RCPT TO:<[email protected]> 
DATA 
This is a test email. To test delivery.
. 
QUIT

    The first few lines introduces yourself, sender and receiver to the mail server. DATA indicates you want to start the body of your email. And the period on a line by itself indicates that you are done with the body. QUIT then terminates the connection.

    Then watch what your server says in reply to each command. If you can successfully deliver this way, then it’s like a problem with your MX record.

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  2. 0

    I don’t know if you have solve this Problem. If you have please let me know. We have a similar error.

    I found out that is has to do with the E-Mail-Header because it may have two domains in it because it gets forwarded. Google don’t like this 🙂

    Google has opened a thread about it and they say you can enter the Domain that forward to the gmail address so it is not detected as some kind of spam.

    I can not test it because I it is an gmail account from an client and I have no access.

    May my executions help. I hope you have an better answer.

    Greets Matt

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