here are few good web tools
for mail server- > RBL/DNSBL Lookup (Blacklist Lookup) for Mailserver
BLACKLISTALERT.ORG - Email Problem ? - Test if your IP or DOMAIN is blacklisted in a spamdatabase
Network Tools: DNS,IP,Email
for mail server- > RBL/DNSBL Lookup (Blacklist Lookup) for Mailserver
BLACKLISTALERT.ORG - Email Problem ? - Test if your IP or DOMAIN is blacklisted in a spamdatabase
Network Tools: DNS,IP,Email