taxa incomum de mensagens não solicitadas provenientes do seu endereço IP

Question

taxa incomum de mensagens não solicitadas provenientes do seu endereço IP

#1 resposta do (5 votos)

3

No meu servidor, eu redireciono os e-mails, chegando a [email protected] , a [email protected] e [email protected] com /etc/aliases arquivo.

Recentemente, recebi o seguinte email na minha caixa de correio [email protected] (para a qual o [email protected] mail foi redirecionado):

Received: by 10.52.34.73 with SMTP id ...;
        Sun, 27 Apr 2014 03:37:39 -0700 (PDT)
...
Received: from myhost (... [16.19.64.110])
        by mx.google.com with ESMTPS id ...
        for <[email protected]>
        (version=TLSv1 cipher=RC4-SHA bits=128/128);
        Sun, 27 Apr 2014 03:37:39 -0700 (PDT)
...
Received: from Debian-exim by myhost with local (Exim 4.72)
    id ...
    for [email protected]; Fri, 25 Apr 2014 13:17:05 +0300
...
Date: Fri, 25 Apr 2014 13:17:05 +0300
...
To: [email protected]

Message frozen

Message 1WddBb-0007hU-1l has been frozen (delivery error message).
The sender is <>.

The following address(es) have yet to be delivered:
  [email protected] <[email protected]>: SMTP error from remote mail server after MAIL FROM:<> SIZE=1558: host gmail-smtp-in.l.google.com [74.125.201.108]: 530-5.5.1 Authentication Required. Learn more at\n530 5.5.1 http://support.google.com/mail/bin/answer.py?answer=14257 h7sm7285577igy.2 - gsmtp
  [email protected] <[email protected]>: SMTP error from remote mail server after MAIL FROM:<> SIZE=1558: host gmail-smtp-in.l.google.com [74.125.201.108]: 530-5.5.1 Authentication Required. Learn more at\n530 5.5.1 http://support.google.com/mail/bin/answer.py?answer=14257 h7sm7285577igy.2 - gsmtp

Então eu corro:

# exigrep -l 1WddBb-0007hU-1l $(find /var/log/exim4 -name 'mainlog*' | sort -rn -t . -k2,2)
2014-04-25 13:17:02 1WddBb-0007hU-1l <= <> H=(115.78.92.64) [118.69.183.136] P=smtp S=522
2014-04-25 13:17:02 1WddBb-0007hU-1l gmail-smtp-in.l.google.com [2a00:1450:4013:c01::1a] Network is unreachable
2014-04-25 13:17:03 1WddBb-0007hU-1l SMTP error from remote mail server after end of data: host gmail-smtp-in.l.google.com [74.125.136.26]: 421-4.7.0 [16.19.64.110      15] Our system has detected an unusual rate of\n421-4.7.0 unsolicited mail originating from your IP address. To protect our\n421-4.7.0 users from spam, mail sent from your IP address has been temporarily\n421-4.7.0 rate limited. Please visit http://www.google.com/mail/help/bulk_mail.\n421 4.7.0 html to review our Bulk Email Senders Guidelines. t3si12446024eeg.301 - gsmtp
2014-04-25 13:17:03 1WddBb-0007hU-1l SMTP error from remote mail server after end of data: host gmail-smtp-in.l.google.com [74.125.136.27]: 421-4.7.0 [16.19.64.110      15] Our system has detected an unusual rate of\n421-4.7.0 unsolicited mail originating from your IP address. To protect our\n421-4.7.0 users from spam, mail sent from your IP address has been temporarily\n421-4.7.0 rate limited. Please visit http://www.google.com/mail/help/bulk_mail.\n421 4.7.0 html to review our Bulk Email Senders Guidelines. x46si12473877eea.209 - gsmtp
2014-04-25 13:17:05 1WddBb-0007hU-1l ** [email protected] <[email protected]> R=dnslookup T=remote_smtp: SMTP error from remote mail server after MAIL FROM:<> SIZE=1558: host gmail-smtp-in.l.google.com [74.125.201.108]: 530-5.5.1 Authentication Required. Learn more at\n530 5.5.1 http://support.google.com/mail/bin/answer.py?answer=14257 h7sm7285577igy.2 - gsmtp
2014-04-25 13:17:05 1WddBb-0007hU-1l ** [email protected] <[email protected]> R=dnslookup T=remote_smtp: SMTP error from remote mail server after MAIL FROM:<> SIZE=1558: host gmail-smtp-in.l.google.com [74.125.201.108]: 530-5.5.1 Authentication Required. Learn more at\n530 5.5.1 http://support.google.com/mail/bin/answer.py?answer=14257 h7sm7285577igy.2 - gsmtp
2014-04-25 13:17:05 1WddBb-0007hU-1l Frozen (delivery error message)
2014-04-25 13:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-25 14:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-25 14:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-25 15:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-25 15:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-25 16:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-25 16:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-25 17:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-25 17:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-25 18:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-25 18:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-25 19:07:58 1WddBb-0007hU-1l Message is frozen
2014-04-25 19:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-25 20:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-25 20:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-25 21:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-25 21:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-25 22:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-25 22:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-25 23:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-25 23:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 00:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 00:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 01:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 01:37:58 1WddBb-0007hU-1l Message is frozen
2014-04-26 02:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 02:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 03:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 03:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 04:07:38 1WddBb-0007hU-1l Message is frozen
2014-04-26 04:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 05:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 05:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 06:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 06:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 07:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 07:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 08:07:58 1WddBb-0007hU-1l Message is frozen
2014-04-26 08:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 09:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 09:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 10:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 10:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 11:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 11:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 12:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 12:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 13:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 13:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 14:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 14:37:58 1WddBb-0007hU-1l Message is frozen
2014-04-26 15:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 15:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 16:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 16:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 17:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 17:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 18:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 18:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 19:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 19:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 20:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 20:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 21:07:58 1WddBb-0007hU-1l Message is frozen
2014-04-26 21:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 22:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 22:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 23:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-26 23:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-27 00:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-27 00:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-27 01:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-27 01:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-27 02:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-27 02:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-27 03:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-27 03:37:58 1WddBb-0007hU-1l Message is frozen
2014-04-27 04:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-27 04:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-27 05:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-27 05:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-27 06:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-27 06:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-27 07:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-27 07:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-27 08:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-27 08:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-27 09:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-27 09:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-27 10:07:58 1WddBb-0007hU-1l Message is frozen
2014-04-27 10:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-27 11:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-27 11:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-27 12:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-27 12:37:37 1WddBb-0007hU-1l Message is frozen
2014-04-27 13:07:37 1WddBb-0007hU-1l Message is frozen
2014-04-27 13:37:37 1WddBb-0007hU-1l Unfrozen by errmsg timer
2014-04-27 13:37:38 1WddBb-0007hU-1l => [email protected] <[email protected]> R=dnslookup T=remote_smtp H=gmail-smtp-in.l.google.com [74.125.136.27] X=TLS1.0:RSA_ARCFOUR_SHA1:16 DN="C=US,ST=California,L=Mountain View,O=Google Inc,CN=mx.google.com"
2014-04-27 13:37:38 1WddBb-0007hU-1l -> [email protected] <[email protected]> R=dnslookup T=remote_smtp H=gmail-smtp-in.l.google.com [74.125.136.27] X=TLS1.0:RSA_ARCFOUR_SHA1:16 DN="C=US,ST=California,L=Mountain View,O=Google Inc,CN=mx.google.com"
2014-04-27 13:37:38 1WddBb-0007hU-1l Completed

2014-04-25 13:17:05 1WddBd-0007hk-1p <= <> R=1WddBb-0007hU-1l U=Debian-exim P=local S=1111
2014-04-25 13:17:06 1WddBd-0007hk-1p ** [email protected] <[email protected]> R=dnslookup T=remote_smtp: SMTP error from remote mail server after MAIL FROM:<> SIZE=2150: host gmail-smtp-in.l.google.com [74.125.201.109]: 530-5.5.1 Authentication Required. Learn more at\n530 5.5.1 http://support.google.com/mail/bin/answer.py?answer=14257 p7sm7216866igg.15 - gsmtp
2014-04-25 13:17:06 1WddBd-0007hk-1p Frozen (delivery error message)
2014-04-25 13:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-25 14:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-25 14:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-25 15:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-25 15:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-25 16:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-25 16:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-25 17:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-25 17:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-25 18:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-25 18:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-25 19:07:58 1WddBd-0007hk-1p Message is frozen
2014-04-25 19:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-25 20:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-25 20:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-25 21:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-25 21:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-25 22:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-25 22:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-25 23:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-25 23:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 00:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 00:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 01:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 01:37:58 1WddBd-0007hk-1p Message is frozen
2014-04-26 02:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 02:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 03:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 03:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 04:07:38 1WddBd-0007hk-1p Message is frozen
2014-04-26 04:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 05:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 05:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 06:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 06:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 07:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 07:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 08:07:58 1WddBd-0007hk-1p Message is frozen
2014-04-26 08:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 09:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 09:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 10:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 10:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 11:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 11:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 12:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 12:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 13:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 13:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 14:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 14:37:58 1WddBd-0007hk-1p Message is frozen
2014-04-26 15:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 15:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 16:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 16:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 17:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 17:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 18:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 18:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 19:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 19:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 20:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 20:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 21:07:58 1WddBd-0007hk-1p Message is frozen
2014-04-26 21:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 22:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 22:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 23:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-26 23:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-27 00:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-27 00:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-27 01:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-27 01:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-27 02:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-27 02:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-27 03:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-27 03:37:58 1WddBd-0007hk-1p Message is frozen
2014-04-27 04:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-27 04:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-27 05:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-27 05:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-27 06:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-27 06:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-27 07:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-27 07:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-27 08:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-27 08:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-27 09:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-27 09:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-27 10:07:58 1WddBd-0007hk-1p Message is frozen
2014-04-27 10:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-27 11:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-27 11:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-27 12:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-27 12:37:37 1WddBd-0007hk-1p Message is frozen
2014-04-27 13:07:37 1WddBd-0007hk-1p Message is frozen
2014-04-27 13:37:38 1WddBd-0007hk-1p Unfrozen by errmsg timer
2014-04-27 13:37:39 1WddBd-0007hk-1p => [email protected] <[email protected]> R=dnslookup T=remote_smtp H=gmail-smtp-in.l.google.com [74.125.136.27] X=TLS1.0:RSA_ARCFOUR_SHA1:16 DN="C=US,ST=California,L=Mountain View,O=Google Inc,CN=mx.google.com"
2014-04-27 13:37:39 1WddBd-0007hk-1p Completed

Primeiro de tudo, tenho problemas para interpretá-lo.

Recebemos uma mensagem de rejeição de 118.69.183.136 . Mas por que ele retorna para [email protected] e [email protected] ? Os dois enviaram um e-mail, que não pôde ser entregue? Improvável.

Em seguida, o Google responde com "421-4.7.0 [16.19.64.110 15] Nosso sistema detectou uma taxa incomum de e-mails não solicitados originados de seu endereço IP. Para proteger nossos usuários contra spam, os e-mails enviados de seu endereço IP foram Taxa temporária limitada. Visite o link para revisar nossas Diretrizes para remetentes em massa de e-mail. " O que isso quer dizer? [email protected] é uma caixa de correio de feedback, redirecionada para [email protected] e [email protected] . Eu duvido que eles enviem muitos emails. Você sugeriria uma maneira de contá-las?

Como resultado, mais uma mensagem de devolução é gerada para [email protected] . Mas agora o Google responde com "Autenticação obrigatória para o 530-5.5.1. Saiba mais em link " Isso eu não entendo também. Agora posso enviar mensagens para [email protected] .

No final, as mensagens devolvidas são entregues. Estou executando debian 6 . Você poderia me explicar o que está acontecendo e o que devo fazer?

exim email-bounces

por x-yuri 28.04.2014 / 23:58

1 resposta

Tags exim email-bounces

Força a exclusão do serviço do Windows phpmyadmin não se conectará a uma instância remota do MySQL

score 5 · Answer 1

We got bounce message from 118.69.183.136. But why does it bounce to both [email protected] and [email protected]? Did they both send an email, which could not be delivered? Unlikely.

Ele não está pulando para os dois endereços, e está enviando para o postmaster dizendo que a entrega para esses dois endereços falhou.

Then google replies with "421-4.7.0 [16.19.64.110 15] Our system has detected an unusual rate of unsolicited mail originating from your IP address. To protect our users from spam, mail sent from your IP address has been temporarily rate limited. Please visit http://www.google.com/mail/help/bulk_mail.html to review our Bulk Email Senders Guidelines." What is this supposed to mean?

Isso significa que você tem uma taxa limitada. Você deve ir para o URL indicado para mais informações. Que parte disso não é clara?

I doubt they send a lot of emails. Would you suggest a way to count them?

Você está latindo na árvore errada. A mensagem afirma claramente que o seu endereço IP está enviando muitos e-mails. Isso não tem nada a ver com quem as mensagens são de ou para, é simplesmente o número de mensagens do endereço IP exato (seu servidor) que estão sendo enviadas para o google. Isso inclui suas mensagens que estão sendo geradas para o postmaster devido a rejeições / falhas que estão sendo encaminhadas para sua conta do Gmail.

Você deve perceber que tem uma pegadinha 22 aqui se o Google estiver limitando a quantidade de mensagens do seu sistema para as deles e você tiver seus erros (rejeições, avisos) indo para o google também.

In the end, the bounce messages get delivered. I'm running debian 6. Could you explain me what's going on and what am I to do?

Você já enviou mensagens suficientes do seu IP para servidores do Gmail e o Google tem temporariamente (como diz claramente nos registros) a taxa limitada. Essas mensagens estão gerando erros (avisos) que não puderam ser entregues imediatamente. Você então tem essas mensagens sendo encaminhadas para outro endereço do Gmail, que está criando ainda mais tentativas de enviar e-mails através dos servidores do Google do seu IP, o que provavelmente está piorando o problema.

Quando a limitação da taxa temporária for suspensa, suas mensagens serão processadas conforme o esperado.

and what am I to do?

Você deve seguir as diretrizes que o Google já forneceu em a mensagem de erro.
Você deve parar de encaminhar o correio do postmaster para o Google para manter o número de mensagens do seu sistema para elas.

Se eles falharem, você deve considerar pagar ao Google para hospedar o domínio corretamente e / ou parar de encaminhar mensagens para contas do Gmail.