[Postfix-es] Es spam lo que sale en los logs

[Carlos Alberto Bernat Orozco]

Buenas tardes grupo

Hace un tiempo les escribi para bloquear mensajes con patrones en el asunto.
Espero su gran ayuda. Les escribo de nuevo para preguntarles sobre algo que
he estado notando. Hace un tiempo noto que me sale mucho en el log los
siguientes argumentos

# tail -f /var/log/mail/info | grep "server refused to talk to me"

Oct 22 15:30:12 server postfix/smtp[25809]: connect to clmboh-02.mgw.rr.com[
65.24.7.15]: server refused to talk to me: 554-clmboh-mx-14.mgw.rr.com  554
#5.5.4 Relaying denied. IP name lookup failed for xxx.xxx.xxx.x   (port 25)
Oct 22 15:30:16 server postfix/smtp[25809]: connect to clmboh-02.mgw.rr.com[
65.24.7.65]: server refused to talk to me: 554-clmboh-mx-11.mgw.rr.com  554
#5.5.4 Relaying denied. IP name lookup failed for xxx.xxx.xxx.x   (port 25)
Oct 22 15:30:17 server postfix/smtp[25809]: connect to clmboh-02.mgw.rr.com[
24.28.204.54]: server refused to talk to me: 554-hrndva-mx-18.mgw.rr.com
554 #5.5.4 Relaying denied. IP name lookup failed for xxx.xxx.xxx.x   (port
25)

Me sale mucho de esto en mis logs. Esto es spam ?

Oct 22 07:42:48 server postfix/cleanup[9600]: 00A8C10468E: message-id=<
20071022054248.00A8C10468E en server.midominio.net.co>
Oct 22 07:42:48 server postfix/qmgr[6330]: 00A8C10468E: from=<>, size=3139,
nrcpt=1 (queue active)
Oct 22 07:51:12 server postfix/smtp[9569]: 00A8C10468E: to=<
cdWINNER en columbus.rr.com>, relay=none, delay=504, status=deferred (connect
to hrndva-01.mgw.rr.com[24.28.204.23]: server refused to talk to me:
554-hrndva-mx-04.mgw.rr.com  554 #5.5.4 Relaying denied. IP name lookup
failed for xxx.xxx.xxx.x  )
Oct 22 08:17:17 server postfix/qmgr[6330]: 00A8C10468E: from=<>, size=3139,
nrcpt=1 (queue active)
Oct 22 08:34:35 server postfix/smtp[10846]: 00A8C10468E: to=<
cdWINNER en columbus.rr.com>, relay=none, delay=3107, status=deferred (connect
to clmboh-02.mgw.rr.com[65.24.7.63]: server refused to talk to me:
554-clmboh-mx-09.mgw.rr.com  554 #5.5.4 Relaying denied. IP name lookup
failed for xxx.xxx.xxx.x  )
Oct 22 09:40:37 server postfix/qmgr[6330]: 00A8C10468E: from=<>, size=3139,
nrcpt=1 (queue active)
Oct 22 09:48:22 server postfix/smtp[14262]: 00A8C10468E: to=<
cdWINNER en columbus.rr.com>, relay=none, delay=7534, status=deferred (connect
to hrndva-01.mgw.rr.com[24.28.204.26]: server refused to talk to me:
554-hrndva-mx-07.mgw.rr.com  554 #5.5.4 Relaying denied. IP name lookup
failed for xxx.xxx.xxx.x  )
Oct 22 11:03:57 server postfix/qmgr[6330]: 00A8C10468E: from=<>, size=3139,
nrcpt=1 (queue active)
Oct 22 11:13:38 server postfix/smtp[17047]: 00A8C10468E: to=<
cdWINNER en columbus.rr.com>, relay=none, delay=12650, status=deferred (connect
to clmboh-01.mgw.rr.com[65.24.7.11]: server refused to talk to me:
554-clmboh-mx-02.mgw.rr.com  554 #5.5.4 Relaying denied. IP name lookup
failed for xxx.xxx.xxx.x  )


Agradezco enormemente cualquier ayuda al respecto

Gracias!!!
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