delivery temporarily suspended: Host or domain name not found. Name service error for name=gmail.com type=MX: Host not found, try again
nameserver 168.95.1.1 nameserver 168.95.192.1
# nslookup > set q=mx > gmail.com Server: 168.95.1.1 Address: 168.95.1.1#53 Non-authoritative answer: gmail.com mail exchanger = 20 alt2.gmail-smtp-in.l.google.com. gmail.com mail exchanger = 30 alt3.gmail-smtp-in.l.google.com. gmail.com mail exchanger = 5 gmail-smtp-in.l.google.com. gmail.com mail exchanger = 40 alt4.gmail-smtp-in.l.google.com. gmail.com mail exchanger = 10 alt1.gmail-smtp-in.l.google.com.
# postqueue -c /etc/postfix -f # /sbin/service postfix restart
mkdir /var/spool/postfix/etc cp /etc/resolv.conf /var/spool/postfix/etc/resolv.conf 或是手動編輯 vi /var/spool/postfix/etc/resolv.conf # 內容放 nameserver 8.8.8.8 nameserver 8.8.4.4 nameserver 168.95.1.1 nameserver 168.95.192.1