Thanks, Sergey, think that's the case.

>Hi Fernando,
>
>This email is sent by UT mail server from your email address. If there's anti-spam software on your end that verifies from address against mail server than validation will fail and email will be rejected.
>
>>
>>To send an UT message by email, I select the desired message, click in the "Email this message to a friend" icon (at the botton), then fill with the email address the prompt that is presented to me and press the "OK" button, and get the "The email has been sent." message. The message never is delivered. (I tried sending a message to my own addr). What am I doing wrong?
>>
>>Another question: how can I send an entire thread by email (I mean all messages of a thread)?