CVE:CVE-2005-0337
CNNVD:CNNVD-200505-542
Postfix 2.1.3，当/proc/net/if_inet6不可用并且在smtpd_recipient_restrictions中启用了permit_mx_backup时，远程攻击者可以通过发送邮件到一个IPv6主机名来绕过电子邮件限制并执行邮件延时。
solution:Upgrade wietse_venema postfix to a higher version than 2.1.3,and avoid the version 2.1.3; Upgrade redhat enterprise_linux to a higher version than 4.0,and avoid the version 4.0; Upgrade redhat enterprise_linux_desktop to a higher version than 4.0,and avoid the version 4.0; Upgrade suse suse_linux to a higher version than 8.0,8.1,8.2,9.0,9.1,9.2,and avoid the version 8.0,8.1,8.2,9.0,9.1,9.2