Just have a look at postfix' log-file (usually /var/log/mail) and post the
corresponding part.

"Kersten Burkhardt" <kersten-k@gmx.net> schrieb im Newsbeitrag
news:bfln47$vkn$04$1@news.t-online.com...
> Hi,
>
> I have Suse 8.2 and postfix1.1.11.
>
> When I try to send mail it works fine, but I get the mail back.
> e.g.:
>
> I send a mail to you@myhost.com from me@myhost.com. When Outlook has
> finsihed sending the email and I look for new mails the from me@myhost.com
> to you@myhost.com is in the list of my new mails. But I am actually not
> recieving the mails of the adress you@myhost.com.
>
> see you Kersten
>
> sorry for my bad english :-)
>
>