Sender address rejected: Domain not found (in reply to RCPT TO command)

[sblantipodi]

Hi,
if I send emails from thunderbird I have no problem,
if I send emails from roundcube using the same email address (same server) the recipient address reject my emails with this reason:

Sender address rejected: Domain not found (in reply to RCPT TO command)

It seems that roundcube add a localhost to the from header.
I can see  from=<myuser@localhost.mydomain.org>


Any idea on how to solve it?
How to remove that localhost?

[SKaero]

Make sure localhost isn't in your mail_domain in the main.inc.php.

[sblantipodi]

Make sure localhost isn't in your mail_domain in the main.inc.php.

Hi,
many many thanks for the answer and for the help.
Unfortunantly there is no localhost there, I have this:
$rcmail_config['mail_domain'] = '';

any other idea?

Thanks!

[sblantipodi]

nothig to do,
roundcubemail adds localhost in the from header. 

is there someone who solved this problem?

[sblantipodi]

(in reply to RCPT TO command)

[JohnDoh]

have you checked whats set in your identity (personal settings -> identities)? since you have not specified a mail_domain on your config rc will use the mail server address as the domain by default.

[sblantipodi]

that was the solution to the problem. thanks