Abrí un puerto y me llegan correos de otro servidor->algo mas

Hola a todos:
        A ver si me pueden ayudar. Resulta que necesitaban ver los correos
personales por web de la univ. Para eso tuve que abrir un puerto porque era
mas o menos asi http://mail.univ.egresados.com:puerto, extrañamente y sin
que se configurase nada mas ni en la cuenta web del usuario ni en el cliente
de correos de la empresa, esos correos están llegando al cliente de correos
del usuario de la empresa. Este es el log del correo:

Sep 25 15:09:58 mail postfix/nqmgr[16933]: 20A9437942:
from=<fdonoso-ut95Jhid345YPLKRSSUG0w@xxxxxxxxxxxxxxxx>, size=838, nrcpt=1 
(queue active)
Sep 25 15:09:58 mail amavis[19274]: (19274-07) ESMTP::10024
/var/lib/amavis/amavis-20060925T150839-19274: 
<fdonoso-ut95Jhid345YPLKRSSUG0w@xxxxxxxxxxxxxxxx> ->
<beatriz.aguilar-FGd64UOAC+Zb44ZuKhz9Ew@xxxxxxxxxxxxxxxx> Received: SIZE=838 
from
mail.lapreferida.cl ([127.0.0.1]) by localhost (mail.lapreferida.cl
[127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 19274-07 for
<beatriz.aguilar-FGd64UOAC+Zb44ZuKhz9Ew@xxxxxxxxxxxxxxxx>; Mon, 25 Sep 2006 
15:09:58 -0400 (CLT)
Sep 25 15:09:58 mail amavis[19274]: (19274-07) Checking:
<fdonoso-ut95Jhid345YPLKRSSUG0w@xxxxxxxxxxxxxxxx> -> 
<beatriz.aguilar-FGd64UOAC+Zb44ZuKhz9Ew@xxxxxxxxxxxxxxxx>
Sep 25 15:09:58 mail amavis[19274]: (19274-07) cached
477ba5701d1c5e7f9998a2239c8f8e2d from 
<fdonoso-ut95Jhid345YPLKRSSUG0w@xxxxxxxxxxxxxxxx> (1,0,0)
Sep 25 15:10:01 mail amavis[19274]: (19274-07) FWD via SMTP:
[127.0.0.1]:10025 <fdonoso-ut95Jhid345YPLKRSSUG0w@xxxxxxxxxxxxxxxx> ->
<beatriz.aguilar-FGd64UOAC+Zb44ZuKhz9Ew@xxxxxxxxxxxxxxxx>
Sep 25 15:10:01 mail postfix/nqmgr[16933]: 01D8737998:
from=<fdonoso-ut95Jhid345YPLKRSSUG0w@xxxxxxxxxxxxxxxx>, size=1318, nrcpt=1 
(queue active)
Sep 25 15:10:01 mail amavis[19274]: (19274-07) Passed CLEAN, [89.0.0.106]
<fdonoso-ut95Jhid345YPLKRSSUG0w@xxxxxxxxxxxxxxxx> -> 
<beatriz.aguilar-FGd64UOAC+Zb44ZuKhz9Ew@xxxxxxxxxxxxxxxx>, Message-ID:
<009901c6e0d5$bb715360$6a000059@soporte>, Hits: -, 2882 ms
Sep 25 15:10:07 mail postfix/nqmgr[16933]: 1F7CA37942:
from=<fdonoso-ut95Jhid345YPLKRSSUG0w@xxxxxxxxxxxxxxxx>, size=1996, nrcpt=1 
(queue active)
Sep 25 15:10:07 mail amavis[19365]: (19365-02) ESMTP::10024
/var/lib/amavis/amavis-20060925T150943-19365: 
<fdonoso-ut95Jhid345YPLKRSSUG0w@xxxxxxxxxxxxxxxx> ->
<baguilar-ut95Jhid345YPLKRSSUG0w@xxxxxxxxxxxxxxxx> Received: SIZE=1996 from 
mail.lapreferida.cl
([127.0.0.1]) by localhost (mail.lapreferida.cl [127.0.0.1]) (amavisd-new,
port 10024) with ESMTP id 19365-02 for 
<baguilar-ut95Jhid345YPLKRSSUG0w@xxxxxxxxxxxxxxxx>; Mon, 25
Sep 2006 15:10:07 -0400 (CLT)
Sep 25 15:10:07 mail amavis[19365]: (19365-02) Checking:
<fdonoso-ut95Jhid345YPLKRSSUG0w@xxxxxxxxxxxxxxxx> -> 
<baguilar-ut95Jhid345YPLKRSSUG0w@xxxxxxxxxxxxxxxx>
Sep 25 15:10:07 mail amavis[19365]: (19365-02) cached
477ba5701d1c5e7f9998a2239c8f8e2d from 
<fdonoso-ut95Jhid345YPLKRSSUG0w@xxxxxxxxxxxxxxxx> (1,1,0)
Sep 25 15:10:07 mail amavis[19365]: (19365-02) FWD via SMTP:
[127.0.0.1]:10025 <fdonoso-ut95Jhid345YPLKRSSUG0w@xxxxxxxxxxxxxxxx> -> 
<baguilar-ut95Jhid345YPLKRSSUG0w@xxxxxxxxxxxxxxxx>
Sep 25 15:10:07 mail postfix/nqmgr[16933]: 356E4379F4:
from=<fdonoso-ut95Jhid345YPLKRSSUG0w@xxxxxxxxxxxxxxxx>, size=2458, nrcpt=1 
(queue active)
Sep 25 15:10:07 mail amavis[19365]: (19365-02) Passed CLEAN, [89.0.0.106]
<fdonoso-ut95Jhid345YPLKRSSUG0w@xxxxxxxxxxxxxxxx> -> 
<baguilar-ut95Jhid345YPLKRSSUG0w@xxxxxxxxxxxxxxxx>, Message-ID:
<009901c6e0d5$bb715360$6a000059@soporte>, Hits: -, 149 ms

No realice nada mas que abrir el puerto de la siguiente forma:

$iptables -A FORWARD -m state --state NEW -p tcp -s ip_equipo_lan --dport
puerto_web_univ -j ACCEPT;

Eso fue todo y no se porque le caen a la empresa.

Help me please!

Nota: Distro RH y Postfix, postconf -n:

[root@mail root]# potconf -n
-bash: potconf: command not found
[root@mail root]# postconf -n
alias_database = hash:/etc/postfix/aliases
alias_maps = hash:/etc/postfix/aliases
append_at_myorigin = yes
body_checks = regexp:/etc/postfix/reject_virus
command_directory = /usr/sbin
config_directory = /etc/postfix
content_filter = smtp-amavis:[127.0.0.1]:10024
daemon_directory = /usr/libexec/postfix
debug_peer_level = 2
header_checks = regexp:/etc/postfix/reject_subject
inet_interfaces = all
mail_owner = postfix
mail_spool_directory = /var/mail
mailbox_command = /usr/bin/procmail
mailbox_size_limit = 0
mailq_path = /usr/bin/mailq.postfix
manpage_directory = /usr/share/man
maps_rbl_domains = relays.ordb.org, list.dsbl.org, sbl.spamhaus.org,
sbl-xbl.spamhaus.org
message_size_limit = 20000000
mydestination = $myhostname, localhost.$mydomain, $myhostname, $mydomain,
$myorigin, mail.fastdeli.cl, fastdeli.cl
mydomain = lapreferida.cl
myhostname = mail.lapreferida.cl
mynetworks = 89.0.0.0/8, 127.0.0.0/8
myorigin = $mydomain
newaliases_path = /usr/bin/newaliases.postfix
queue_directory = /var/spool/postfix
readme_directory = /usr/share/doc/postfix-1.1.12/README_FILES
relay_domains = $mydestination
sample_directory = /usr/share/doc/postfix-1.1.12/samples
sendmail_path = /usr/sbin/sendmail.postfix
setgid_group = postdrop
smtpd_client_restrictions = permit_mynetworks, reject_maps_rbl,
check_relay_domains
smtpd_recipient_restrictions = permit_mynetworks, check_sender_access
hash:/etc/postfix/restricted_senders, reject_unauth_destination
smtpd_restriction_classes = external_mail, local_only
smtpd_sender_restrictions = check_sender_access hash:/etc/postfix/access,
reject_unknown_sender_domain, reject_non_fqdn_sender, permit_mynetworks


Atte. 
:::::::::::::::::::::::::::::::::::::::::::: 
Fabian Donoso C. 
http://fdonosoc.phpnet.us (Mi Website - Nuevas Noticias)  



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