I have nethserver 7 RC 4 installed and it seems that sogo has some problems in sending mail and i think it’s not related to the mail server.
So if i want to send an e-mail with sogo, I compose the message and when i hit the send button it does nothing. The only way i found it works is to reply to a person who already sent you an e-mail and that only if you open that e-mail in a new mail window (you have that option in sogo… it’s a button, a sqare with an arrow inside).
So my guess is that it’s something related only to sogo (maybe the version, maybe some missing components).
I forgot to mention that roundcube doesn’t have these problems.
Can anyone tell me if you have the same problems with sogo?