Hi there

I'm having problems sending and receiving mail
mydomain: mail.myguidetravel.com
Public IP: 83.245.69.36
Private IP - Zimbra Server: 10.0.0.8
Portforwarding on my firewall:
ports 25(smtp),389(ldap),7025(lmtp),80(web) and 143(IMAP)
All forwarding from 83.245.69.36 to 10.0.0.8

my hosts file looks as follows
127.0.0.1 localhost.localdomain localhost
10.0.0.8 mail.myguidetravel.com mail

And I have mx and a records setup

In the MTA
If I have "Enable DNS Lookup" set to off

Mail does not go out, but I can receive mail fine.
I get the following error in the Logs in relation to sending mail
Mar 3 12:59:23 mail postfix/smtp[16591]: 44F698407C: to=, relay=none, delay=90, status=deferred (connect to gmail.com[64.233.171.83]: Connection timed out)


If I have "Enable DNS Lookup" set to on
Mail goes out fine, but I can not receive mail.
I get the following error in the Logs in relation to receiving mail
Mar 3 13:11:43 mail postfix/lmtp[20898]: 5DF2F84074: to=, relay=none, delay=191, status=deferred (connect to mail.myguidetravel.com[83.245.69.36]: Connection timed out)

I'm stumped

Any idea why this might be happening.
Any help would be greatly appreciated.

Ger