Hi, I configure a server mail, postfix + courier + mysql (spamassassin,amavis,pop-before-smtp) on a debian. I patched postfix with the patch VDA. The quota is ok. But when I exceed my quota, the server send this mail Code: This is the mail system at host mail.domain.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] How this mail is create? Can I modifie it? Regards.