Error message on email send since update 12.0.46

[Pascal - Netenvie]

Hi,
Since this morning we regularly get this message in boxmail of adress used to send email from server :
--------------------------------------------------------------------------------
This is the mail system at host DOMAIN.fr.
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]> (expanded from <1>): User unknown in virtual
alias table
-----------------------------------------------------------------------------------

If i look in maillog i see that :
-------------------------------------------------------
May 18 16:48:52 SERVERNAME postfix/error[22737]: F22521B4E45: to=<[email protected]>, orig_to=<1>, relay=none, delay=0.07, delays=0.04/0.01/0/0.02, dsn=5.0.0, status=bounced (User unknown in virtual alias table)

Just after that we can see email go normally :
-------------------------------------------------------
May 18 16:48:59 SERVERNAME postfix/smtp[22736]: F22521B4E45: to=<[email protected]>, relay=mx3.mail.icloud.com[17.158.8.50]:25, delay=7.3, delays=0.04/0.03/2.4/4.8, dsn=2.5.0, status=sent (250 2.5.0 Ok.)

The problem is in error message (at top) the message attached is the one sent to [email protected].
So we can think the message is not sent to [email protected].

SERVERNAME, HOSTER and EMAIL@DOMAIN are here to mask real data.

-------------------------------------------------------
Server :

• OS: Debian 7.7
• Plesk version: 12.0.18 Update #46

An idea to solve that ?

 

[Pascal - Netenvie]

On another server we have almost same problem but the server try to send message to <[email protected]>.

 

[UFHH01]

Hi Pascal - Netenvie,

did you probably have an autoresponder switched on for the eMail - account? The message looks like you got an eMail for one of your accounts and the corresponding server just notifies you, that the eMail sent from your server couldn't be delivered, because there is no existent eMail - account, that you were trying to sent an eMail to.

Such a behaviour is pretty normal and has got nothing to do with the latest updates or Plesk itself. It is just an bounce - eMail - notification from the corresponding eMail - server to you.

 

[Pascal - Netenvie]

I listen what you say but all these bounce messages appears since this morning ...
And email in error [email protected] never existed.

 

[UFHH01]

Hi Pascal - Netenvie,

you could as well switch off such bounce messages in your mail-server - settings, so that your server doesn't respond to eMails to non-existing accounts.

 

[Pascal - Netenvie]

Hi,
thanks but where is this option ?
I looked at all options in Mailserver settings and didn't find it ...

 

[UFHH01]

Hi Pascal - Netenvie,

you find this option at:

Domains > YOUR_DOMAIN.COM > eMail > eMail - settings for YOUR_DOMAIN.COM > Choose the option "reject"

or have a look at the Plesk 12 online documentation:

Mail Settings of Domains ( Administrator's Guide, Plesk 12.0 onlinde documentation )​

 

[Pascal - Netenvie]

Hmmm, ok.
So in this page Mail service is disable for the domain and reject is already selected !

 

[Pascal - Netenvie]

These emails start appearing after last plesk update ... so perhaps there is something in update that cause that.
Whatever for now i simply search a way to stop these emails ...

 

[UFHH01]

Hi Pascal - Netenvie,

These emails start appearing after last plesk update ... so perhaps there is something in update that cause that.

Answer: No.
This is not a cause of an update. The eMail - account "1" doesn't exist at "SERVERNAME.HOSTER.com" and your mail - server just tells you, that a delivery is not possible.

 

[Pascal - Netenvie]

Ok ok.
Whatever i gone to Domains > YOUR_DOMAIN.COM > eMail > eMail - settings for YOUR_DOMAIN.COM >
I have enable mail service (Reject was already selected) and we still have these bounce message in box ...

 

[UFHH01]

Hi Pascal - Netenvie,

it might be, that you have to restart your mail - server manually ( normally, this should be done by Plesk, when you changed any configuration settings for it ). Please try the command:

service postfix restart
or
/etc/init.d/postfix restart
or
/etc/init.d/postfix stop & /etc/init.d/postfix start​

If you still experience issues and still receive the bounce messages, please post again the current log - file and try not to shorten it. If you are afraid of posting the log with personal domain/eMail - credentials, you could post it as a private message to me for further investigations.

 

[Pascal - Netenvie]

Ok. Done.
I will keep you in touch of results.
Thx !

 

[Pascal - Netenvie]

Problem still here, i sent you a message with log.

 

[UFHH01]

Hi Pascal - Netenvie,

the active queue for your eMail will result in further delivery retries and in further bounce messages. As stated in your logs:

May 21 17:07:25 69400hpv095044 postfix/qmgr[16126]: EC20B1B4E47: from=<[email protected]>, size=9750, nrcpt=1 (queue active)

Try to delete the postfix queue with:

postfix -f
or
postfix flush​

The mail queue can be viewed as well with "mailq" or over the Plesk Control Panel.



I have to admit, that I am bit confused with your current configuration, relays, proxy and settings and from your short log I can't investigate the origin sender for the mail to "[email protected]". Did you probably configure a blind copy for confirmation eMails from a shop to your server, while you use another relay server for delivery? It looks like you created a loop somewhere, which I couldn't find with my investigations at the moment.

My suggestion is: Flush all related queues on your several used servers and try to delete BBC(s) and or settings for confirmation-eMails to non-existing eMail-addresses. If this doesn't solve the issue(s), reboot your servers and have a look if the loop still exists in your logs.

 

[Pascal - Netenvie]

Hi,
Thanks for your answer.
I know and use these commands.
All that have start very recently and nothing changed on site or server except plesk.

We have no relay or proxy and no blind copy for this email.

I will try what you said and keep you informed.