SMTP Error "" smtp: Failed: 451 4.3.0 Error: queue file write error ""

[itrojy (Rojy Sam Raju)]

Dear Check_MK community,

Can any one help me to find out the error showing in null mailer client

“” smtp: Failed: 451 4.3.0 Error: queue file write error “”

I am getting this error while null-mailer try to sent individual mail to users. But in the same time users are getting notification of any host that we are not assigned to all user instead of particular user.

Thanks & Regards,

Rojy Sam Raju

[r.sander (Robert Sander)]

@itrojy

451 4.3.0 Error: queue file write error

This error message is generated by the mail server your nullmailer tries to send the email to. You need to investigate there why the mail was not accepted.

[itrojy (Rojy Sam Raju)]

Hai R.Sander,

In this case but i am receiving sometimes any one of the host notification for all the users and the notification is deliver all .But no one is getting separate notification like earlier image attached.

Thanks & Regards,

Rojy Sam Raju