ciao mere! grazie per la risposta.... infatti mi hanno preso un po impreparato .... per curiosità sono andato sul sito IBM dove era consigliato di fare un test su dnsstuff.com
e ho avuto qeste info
Low port test Error: Our local DNS server was unable to get your MX record. This usually means that a firewall in front of your DNS server is interfering. For example, it may be blocking DNS packets from low source port numbers (ours is often in the 1024-1030 range). Firewalls should never block DNS queries based on the source IP address; otherwise, it is guaranteed that legitimate queries will be blocked. This specific lookup must be cached, so a recent change may not be reflected.
Reverse DNS entries for MX records ERROR: None of your mail server(s) seem to have reverse DNS (PTR) entries (I didn\'t get any responses for them). RFC1912 2.1 says you should have a reverse DNS for all your mail servers. It is strongly urged that you have them, as many mailservers will not accept mail from mailservers with no reverse DNS entry. You can double-check using the \'Reverse DNS Lookup\' tool at the DNSstuff site (it contacts your servers in real time; the reverse DNS lookups in the DNS report use our local caching DNS server).
Che ne dici? Dove potrebbe essere il problema?
SONO INCASINATISSIMO!!
Ciao e buona serata!!
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