[CentOS-pt-br] help

[Hainadine Chamane]

Olá,
tenho o iRedMail a correr com Centos5.x e de uma semana para cá tenho
tido dois problemas:
1º - "TESTING#1: dkim._domainkey.mydomain.com => invalid (public key: not
available)" sempre que faço o teste (amavisd testkeys)
2º - Recebo mensagens de erro quando os utilizadores tentam mandar emails
para hotmail e yahoo como mostra abaixo:

"This is the mail system at host mydomain.com.I'm sorry to have to inform
you that your message could notbe delivered to one or more recipients.
It's attached below.
For further assistance, please send mail to postmaster.If you do so,
please include this problem report. You candelete your own text from the
attached returned message. The mail system
: host mx3.hotmail.com[65.55.92.136] said: 550
 OU-001 Mail rejected by Windows Live Hotmail for policy reasons. Reasons
for rejection may be related to content with spam-like characteristics or
IP/domain reputation problems. If you are not an email/network admin
please
 contact your
E-mail/Internet Service Provider for help. Email/network
admins, please visit http://postmaster.live.com for email delivery
information and support (in reply to MAIL FROM command)Reporting-MTA: dns;
mail.mydomain.com X-iRedMail-Queue-ID: 751BC52012EX-iRedMail-Sender:
rfc822; hainadine em mydomain.com
Arrival-Date: Thu, 13 May 2010 16:47:47 +0200 (CAT)Final-Recipient:
rfc822; hainadine_chamane em hotmail.com
Original-Recipient: rfc822;hainadine_chamane em hotmail.comAction: failed
Status: 5.0.0Remote-MTA: dns; mx3.hotmail.comDiagnostic-Code: smtp; 550
OU-001 Mail rejected by Windows Live Hotmail for policy reasons. Reasons
for rejection may be related to content with
 spam-like characteristics or IP/domain reputation problems. If you are
not an email/network admin please contact your E-mail/Internet Service
Provider for help. Email/network admins, please visit
http://postmaster.live.com for
 email delivery information and support" 

Por favor, agradecia a vossa ajuda, 

Obrigado,
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