No send and Receibe Emails...

[KatiaSisHost]

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.

[KatiaSisHost]

update, cant send internal emails too.

[overseer]

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