postfix warning

[pawan]

Feb 16 15:16:16 server1 postfix/smtpd[7645]: warning: 49.200.19.116: hostname Static-116.19.200.49.tataidc.co.in verification failed: No address associated with hostname
Feb 16 15:17:20 server1 postfix/smtpd[6968]: warning: 49.200.19.116: hostname Static-116.19.200.49.tataidc.co.in verification failed: No address associated with hostname
Feb 16 15:21:56 server1 postfix/smtpd[7231]: warning: 95.70.213.166: hostname 166.213.70.95.static.turk.net verification failed: No address associated with hostname

No address associated with hostname? does it mean that no address is associated with the the hostname on my server.

In the above log tataidc.co.in or static.turk.net are not part of the domains on my server.

What should I make out from the above log?
Does it mean that my server SMTP is blocking UN-authorised access from these domains
or these domains are not recognising my server?

[Jim Locke]

You are blocking them with your postfix config. IE: Spammers