No send and Receibe Emails...

i cant send o receibe emails...

Everything has been working for about 1 year... and suddenly it stopped receiving emails and sending them...
I just did a test, I deleted all the queues, I sent an email from my gmail account to mine hosted in the cwp... my incoming email appears in the queues, but if I go to my inbox it doesn't appear...

when he sent an email... they don't reach their destination but there doesn't seem to be an error anywhere.

update, cant send internal emails too.

You've rebuilt the mail server? Is DNS set up and tested as working? rDNS in place? MX records? SPF TXT records?