What in my setup have I done wrong when I get extremely many Undelivered Mail Returned to Sender, such as the below?

I understand why they arrive, but I don't want them. And I have tried to write a mail rule that delete them asap, but they tend to end up in the spam folder instead. And I want to keep my spam folder clean, meaning I spend a lot of time to delete these…

Any suggestions?

Oh my heavens! how much I hate spammers!!!

 

Quote

This is the mail system at host mail.mymailserver.se.

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

<kostyauztrnkor@gmail.com>: host gmail-smtp-in.l.google.com[64.233.163.27]
   said: 550-5.1.1 The email account that you tried to reach does not exist.
   Please try 550-5.1.1 double-checking the recipient's email address for
   typos or 550-5.1.1 unnecessary spaces. For more information, go to 550
   5.1.1  https://support.google.com/mail/?p=NoSuchUser
   f5-20020a2eb5a5000000b002d066ad1355si634415ljn.611 - gsmtp (in reply to
   RCPT TO command)
Reporting-MTA: dns; mail.mymailserver.se
X-Postfix-Queue-ID: 6ED578204A
X-Postfix-Sender: rfc822; carlsson@myforum.com,
Arrival-Date: Wed,  7 Feb 2024 19:33:46 +0100 (CET)

Final-Recipient: rfc822; kostyauztrnkor@gmail.com
Original-Recipient: rfc822;kostyauztrnkor@gmail.com
Action: failed
Status: 5.1.1
Remote-MTA: dns; gmail-smtp-in.l.google.com
Diagnostic-Code: smtp; 550-5.1.1 The email account that you tried to reach does
   not exist. Please try 550-5.1.1 double-checking the recipient's email
   address for typos or 550-5.1.1 unnecessary spaces. For more information, go
   to 550 5.1.1  https://support.google.com/mail/?p=NoSuchUser
   f5-20020a2eb5a5000000b002d066ad1355si634415ljn.611 - gsmtp

Från: My Forum <carlsson@myforum.com>

Ämne: Did you forget to submit your content?

Datum: 7 februari 2024 19:33:46 CET

Till: kostyauztrnkor@gmail.com

 

 

	Thanks for your submission! Before your content can be seen by other members, we need to create an account for you. Finish submitting button — My forum
	If you do not take any action, we will delete your email address and not contact you again. There is no need to unsubscribe.

 

 

 

 

This particular mail is the result of activating the Post before Register feature. It will cause more spam registrations. 

The email account that you tried to reach does not exist.

This happens.

14 minutes ago, acarlsson said:

And I have tried to write a mail rule that delete them asap, but they tend to end up in the spam folder instead.

Which mail server do you use for your domain?

Edited February 7, 20241 yr by Safety1st

9 hours ago, opentype said:

This particular mail is the result of activating the Post before Register feature. It will cause more spam registrations. 

What will happen if I turn this off?

 

9 hours ago, Safety1st said:

The email account that you tried to reach does not exist.

This happens.

Which mail server do you use for your domain?

Plesk on Ubuntu. (that would be Postfix, Qmail and Dovecot under the hood)

1 minute ago, acarlsson said:

that would be Postfix, Qmail and Dovecot under the hood

Is this mail servers or just local software to send emails?

It's a separate mail server.

Do you have properly configured MX & PTR DNS records? Why is your mail server not capable to drop emails?

Edited February 8, 20241 yr by Safety1st

On 2/8/2024 at 7:41 AM, Safety1st said:

Do you have properly configured MX & PTR DNS records? Why is your mail server not capable to drop emails?

Everything is set up to work as a normal email server, and works as it should.

I don't understand what you mean by "drop emails"? 

The mail that I get (as shown above) is the mail server saying there is no mail account on that address, because the spammer have used an email that doesn't exist. Thus I (as in the admin of the site) am sent an email every time these emails won't reach their destination.

So basically I wonder if there's a way to turn off the "Did you forget to submit your content?" email, or a better solution to this behavior?

 

You can turn off “Post before Registering”. Type “post before register” in the ACP search to find it. 

Afterwards, guests need to register first before submitting a post. 

5 hours ago, acarlsson said:

I don't understand what you mean by "drop emails"?

Your mail server either 🙂

 

5 hours ago, acarlsson said:

as in the admin of the site

No, as a contact where NDR are sent. It could be different addresses.

 

5 hours ago, acarlsson said:

So basically I wonder if there's a way to turn off the "Did you forget to submit your content?" email, or a better solution to this behavior?

Is it guaranteed that spammers will start to use an emails that does exist? 🙂