I am able to use thunderbird to send email but I seem to be unable to use a web based application to do the same.
All I should have to do is specify the MX name, user and password and start sending mails but it fails to work for a mail in the same domain or another.
A tcpdump shows traffic arriving to the mail server but no zimbra logs show authentication or rejection. Is there a way to set the logs to a higher debug level?
The firewall is allowing outgoing traffic.
It is also worth noting that both mail server and application server are VMs on the same KVM server and share the same internal network and subnet (192.168.122.x/24).
I also had a look at the postfix config and it does seem to allow mails being sent from the (virtual) lan:
mynetworks = 127.0.0.0/8 192.168.122.0/24
smtpd_recipient_restrictions = reject_non_fqdn_recipient, permit_sasl_authenticated, permit_mynetworks, reject_unauth_destination, reject_unlisted_recipient, reject_invalid_hostname, reject_non_fqdn_sender, permit
Am I missing something obvious?
Thanks for your help.