Re: e-mail from local host

["Juan Nin" <juann@juanin.com>]

From: "Luis Finotti" <finotti@yahoo.com>

>   finotti@math.ucsb.edu
>     SMTP error from remote mailer after RCPT
> TO:<finotti@math.ucsb.edu>:
>     host mailv.math.ucsb.edu [128.111.88.21]: 504
> <debian>:
>     Helo command rejected: need fully-qualified
> hostname

you should have a FQDN hostname (fully-qualified domain name)
the remote SMTP server rejects you connection, because your machine
identifies itslef as "debian" which is not an existent hostname

change your hostname so as to have an FQDN hostname (host.domain.tld)

regards,

Juan