> SMTP error from remote mail server after RCPT TO:<any@???>:
> host mx0.gmx.de [213.165.64.100]: 550-5.7.1 {mx072} Sorry, your helo
> has been denied.
> 550 5.7.1 ( http://portal.gmx.net/serverrules )
>
> Can anyone help? I don't found any "helo configuration".
that's really strange, because the relevant parameter
'helo_data' even includes 'helo' in its name ;-) See: