[Dovecot] Problem with dovecot configuration + mysql (I think)

Hi everybody,

I have a problem after configuring dovecot to work with mysql (Debian Etch System).

When i send an email from outside, i have an undelivred mail returned to sender saying : Relay access denied (in reply to RCPT TO command)

In my dovecot log file i have these errors :

Nov 28 20:08:27 myhost postfix/smtpd[5087]: connect from smtp5-g21.toto.com [1.2.3.4] Nov 28 20:08:27 myhost postfix/smtpd[5087]: NOQUEUE: reject: RCPT from smtp5-g21.toto.com [1.2.3.4]: 554 5.7.1 mymail@test.com: Relay access denied; from=outside-mail@toto.com to=mymail@test.com proto=ESMTP helo= Nov 28 20:08:28 myhost postfix/smtpd[5087]: disconnect from smtp5-g21.toto.com [1.2.3.4]

What do you think is the problem ?

Thanks,