Forward email trought Barracuda Cloud Services


NethServer Version: 7.3.1611


Our NethServer send email trought Barracuda SpamFirewall appliance. Recently we bought Barracuda Cloud Services and we use this to check emails from Office 365. We want to use the same service with NethServer but i receive some errors
For example this:

Dec 20 09:46:13 email postfix/smtp[30217]: 66A6220763A6:,[]:587, delay=31, delays=0.02/0/31/0, dsn=4.0.0, status=deferred (SASL authentication failed; server[] said: 504 Unrecognized authentication type)

Dec 20 09:51:43 email postfix/smtp[30636]: connect to[]:465: No route to host Dec 20 09:51:43 email postfix/smtp[30636]: EEF8620763A8:, relay=none, delay=30, delays=0.01/0.05/30/0, dsn=4.4.1, status=deferred (connect to[]:465: No route to host)

Can you help me to resolve one of this errors?

How you forward mail to Barracuda Cloud: with smarthost feature of Nethserver?

Maybe you have to implement this:


This only works if you are using outbound authentication, but if you’re using an open relay from your server, you can’t use sTunnel. At least from what I am seeing.