Background
User A Domino mail server was hung up and a new one was built, resulting in a pile of back letters. Here are two of these questions
Question one:
No route found to domain xxx.com from server xxx/xxx. Check DNS configuration.
"Issue Tracking"
1. Server Side--run--cmd
2. nslookup
3. Set TYPE=MX
4. Enter xxx.com to discover that this domain name is not resolved at all.
DNS configuration address problem was found, changed the DNS after the external network is normal.
Question two:
Was wasn't delivered to: [email protected]
because:554 Message relaying denied for security policy.
"Issue Tracking"
Input Address: http://www.spamhaus.org/query/ip/xxx.xxx.xx.xx
Found to be pulled into the blacklist, only a step by step representations.
Report:
Check if the message is blacklisted
http://www.spamhaus.org/
Http://mxtoolbox.com
DNS Reverse resolution Command nslookup