My first installation i can receive but can't send from webmail

Hello, 

thanks for this best product!! 

I have deployed the OVA img and i have try to use the server. 

Now i have made the configuration with dns cloudflare and i can receive correctly all email form externale domain but i can't reply with they

these is the error that i encountered when try to send with external domain:

SYSTEM          [00007FC4913F7700] 22:10:27 Client session Connecting to 'mx.xxxxxx.it', preferred local IP=xxxxxxx
SYSTEM          [00007FC4913F7700] 22:10:27 Client session Could not connect to 'mx.pxxxxa.it(62.1xxx.154)' (error 99)
62.1xxxxx8.154  [00007FC4913F7700] 22:10:27 Client session *** <SRS0+07fb=NL=wexxxxxxxiari.net=emanuele@xxxxxxx.net> <emanuele@xxxxbira.it> 1 4800 00:00:00 INCOMPLETE-SESSION 202406092210260757
62.149.128.154  [00007FC4913F7700] 22:10:27 Client session Disconnected

I have try with telnet and all it's ok

ping ok

tracepath is ok

this with gmail destination:

SYSTEM          [00007FC4913F7700] 22:10:17 Client session Connecting to 'gmail-smtp-in.l.google.com', preferred local IP=2xxxxxx06
SYSTEM          [00007FC4913F7700] 22:10:17 Client session Could not connect to 'gmail-smtp-in.l.google.com(6xxxxxxx26)' (error 99)
SYSTEM          [00007FC4913F7700] 22:10:17 Client session Connecting to 'alt1.gmail-smtp-in.l.google.com', preferred local IP=2xxxxxx6
SYSTEM          [00007FC4913F7700] 22:10:17 Client session Could not connect to 'alt1.gmail-smtp-in.l.google.com(1xxxxxxx6)' (error 99)
SYSTEM          [00007FC4913F7700] 22:10:17 Client session Connecting to 'alt2.gmail-smtp-in.l.google.com', preferred local IP=2.xxxxxx06

Please this is make me crazy