Hi, i'm having some problems in my mta server.
I'm running Suse 10.1 , Postfix 2.2.9.
Suddenly i started receiving ths var/log/mail logs:

.......
Nov 25 08:43:28 cluster2 postfix/smtpd[7088]: fatal: watchdog timeout
Nov 25 08:43:28 cluster2 postfix/smtpd[7062]: fatal: watchdog timeout
Nov 25 08:43:28 cluster2 postfix/smtpd[7073]: fatal: watchdog timeout
Nov 25 08:43:28 cluster2 postfix/smtpd[7061]: fatal: watchdog timeout
Nov 25 08:43:29 cluster2 postfix/cleanup[7092]: warning: premature
end-of-input on cleanup socket while reading input attribute name
Nov 25 08:43:29 cluster2 postfix/cleanup[7083]: fatal: watchdog timeout
Nov 25 08:43:29 cluster2 postfix/cleanup[7084]: fatal: watchdog timeout
Nov 25 08:43:28 cluster2 postfix/smtpd[7056]: connect from unknown[190.2.45.89]
Nov 25 08:43:29 cluster2 postfix/smtpd[7078]: connect from
unknown[200.110.137.253]
Nov 25 08:43:29 cluster2 postfix/smtpd[7074]: lost connection after
DATA from unknown[212.210.219.178]
Nov 25 08:43:29 cluster2 postfix/cleanup[7092]: warning: premature
end-of-input on cleanup socket while reading input attribute name
Nov 25 08:43:29 cluster2 postfix/cleanup[7085]: fatal: watchdog timeout
Nov 25 08:43:29 cluster2 postfix/smtpd[7075]: connect from
unknown[200.110.137.253]
Nov 25 08:43:28 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/smtpd pid 7064 exit status 1
Nov 25 08:43:29 cluster2 postfix/smtpd[7052]: fatal: watchdog timeout
Nov 25 08:43:29 cluster2 postfix/cleanup[7092]: warning: premature
end-of-input on cleanup socket while reading input attribute name
Nov 25 08:43:29 cluster2 postfix/smtpd[7059]: fatal: watchdog timeout
Nov 25 08:43:29 cluster2 postfix/cleanup[7087]: fatal: watchdog timeout
Nov 25 08:43:29 cluster2 postfix/smtpd[7074]: disconnect from
unknown[212.210.219.178]
Nov 25 08:43:30 cluster2 postfix/cleanup[7090]: fatal: watchdog timeout
Nov 25 08:43:30 cluster2 postfix/smtpd[7063]: connect from unknown[65.54.51.98]
Nov 25 08:43:30 cluster2 postfix/cleanup[7091]: warning: premature
end-of-input on cleanup socket while reading input attribute name
Nov 25 08:43:30 cluster2 postfix/qmgr[4935]: 887885C0193: skipped,
still being delivered
Nov 25 08:43:30 cluster2 postfix/smtpd[7078]: disconnect from
unknown[200.110.137.253]
Nov 25 08:43:30 cluster2 postfix/cleanup[7092]: warning: premature
end-of-input on cleanup socket while reading input attribute name
Nov 25 08:43:30 cluster2 postfix/smtpd[7075]: disconnect from
unknown[200.110.137.253]
Nov 25 08:43:30 cluster2 postfix/smtpd[7072]: 863105C028E:
client=unknown[209.85.213.56]
Nov 25 08:43:30 cluster2 postfix/qmgr[4935]: 7F26C5C01BA: skipped,
still being delivered
Nov 25 08:43:29 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/cleanup pid 7027 exit status 1
Nov 25 08:43:30 cluster2 postfix/qmgr[4935]: 3424E5C011D: skipped,
still being delivered
Nov 25 08:43:31 cluster2 postfix/qmgr[4935]: 41F3E5C019C: skipped,
still being delivered
Nov 25 08:43:30 cluster2 postfix/smtpd[7056]: CAF735C028D:
client=unknown[190.2.45.89]
Nov 25 08:43:31 cluster2 postfix/qmgr[4935]: B38C05C01E8: skipped,
still being delivered
Nov 25 08:43:30 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/smtpd pid 7054 exit status 1
.....and many more

The var/log/warn log :
......
Nov 25 08:45:36 cluster2 postfix/cleanup[7229]: warning: premature
end-of-input on cleanup socket while reading input attribute name
Nov 25 08:45:36 cluster2 postfix/cleanup[7225]: fatal: watchdog timeout
Nov 25 08:45:37 cluster2 postfix/cleanup[7227]: warning: premature
end-of-input on cleanup socket while reading input attribute name
Nov 25 08:45:37 cluster2 postfix/cleanup[7234]: warning: premature
end-of-input on cleanup socket while reading input attribute name
Nov 25 08:45:37 cluster2 postfix/cleanup[7235]: warning: premature
end-of-input on cleanup socket while reading input attribute name
Nov 25 08:45:37 cluster2 postfix/master[3664]: warning:
/usr/lib/postfix/smtpd: bad command startup -- throttling
Nov 25 08:45:38 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/smtpd pid 7199 exit status 1
Nov 25 08:45:38 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/smtpd pid 7203 exit status 1
Nov 25 08:45:38 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/smtpd pid 7204 exit status 1
Nov 25 08:45:38 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/smtpd pid 7205 exit status 1
Nov 25 08:45:38 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/smtpd pid 7208 exit status 1
Nov 25 08:45:38 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/smtpd pid 7211 exit status 1
Nov 25 08:45:39 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/smtpd pid 7212 exit status 1
Nov 25 08:45:39 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/smtpd pid 7214 exit status 1
Nov 25 08:45:39 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/smtpd pid 7216 exit status 1
Nov 25 08:45:39 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/smtpd pid 7217 exit status 1
Nov 25 08:45:39 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/smtpd pid 7219 exit status 1
Nov 25 08:45:39 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/smtpd pid 7220 exit status 1
Nov 25 08:45:39 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/smtpd pid 7221 exit status 1
Nov 25 08:45:39 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/smtpd pid 7222 exit status 1
Nov 25 08:45:39 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/cleanup pid 7223 exit status 1
Nov 25 08:45:39 cluster2 postfix/master[3664]: warning:
/usr/lib/postfix/cleanup: bad command startup -- throttling
Nov 25 08:45:40 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/cleanup pid 7224 exit status 1
Nov 25 08:45:40 cluster2 postfix/cleanup[7233]: fatal: watchdog timeout
Nov 25 08:45:40 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/cleanup pid 7225 exit status 1
Nov 25 08:45:40 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/cleanup pid 7226 exit status 1
Nov 25 08:45:40 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/smtpd pid 7228 exit status 1
Nov 25 08:45:40 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/smtpd pid 7230 exit status 1
Nov 25 08:45:40 cluster2 postfix/smtpd[7200]: fatal: watchdog timeout
Nov 25 08:45:40 cluster2 postfix/smtpd[7209]: fatal: watchdog timeout
Nov 25 08:45:40 cluster2 postfix/cleanup[7229]: fatal: watchdog timeout
Nov 25 08:45:40 cluster2 postfix/smtpd[7202]: fatal: watchdog timeout
Nov 25 08:45:40 cluster2 postfix/smtpd[7215]: fatal: watchdog timeout
Nov 25 08:45:41 cluster2 postfix/cleanup[7234]: fatal: watchdog timeout
Nov 25 08:45:41 cluster2 postfix/cleanup[7227]: fatal: watchdog timeout
Nov 25 08:45:41 cluster2 postfix/smtpd[7218]: fatal: watchdog timeout
Nov 25 08:45:41 cluster2 postfix/smtpd[7207]: fatal: watchdog timeout
Nov 25 08:45:41 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/cleanup pid 7233 exit status 1
Nov 25 08:45:41 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/smtpd pid 7200 exit status 1
Nov 25 08:45:41 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/cleanup pid 7229 exit status 1
Nov 25 08:45:41 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/smtpd pid 7209 exit status 1
Nov 25 08:45:41 cluster2 postfix/cleanup[7235]: warning: premature
end-of-input on cleanup socket while reading input attribute name
Nov 25 08:45:41 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/smtpd pid 7202 exit status 1
Nov 25 08:45:42 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/smtpd pid 7215 exit status 1
Nov 25 08:45:42 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/smtpd pid 7207 exit status 1
Nov 25 08:45:42 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/smtpd pid 7218 exit status 1
Nov 25 08:45:42 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/cleanup pid 7227 exit status 1
Nov 25 08:45:42 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/cleanup pid 7234 exit status 1
Nov 25 08:45:42 cluster2 postfix/cleanup[7235]: warning: premature
end-of-input on cleanup socket while reading input attribute name
Nov 25 08:45:46 cluster2 postfix/smtpd[7232]: fatal: watchdog timeout
Nov 25 08:45:46 cluster2 postfix/cleanup[7235]: fatal: watchdog timeout
Nov 25 08:45:47 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/smtpd pid 7232 exit status 1
Nov 25 08:45:47 cluster2 postfix/smtpd[7213]: fatal: watchdog timeout
Nov 25 08:45:47 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/cleanup pid 7235 exit status 1
Nov 25 08:45:48 cluster2 postfix/master[3664]: warning: process
/usr/lib/postfix/smtpd pid 7213 exit status 1
.....

My postconf -n:
alias_maps = hash:/etc/aliases
biff = no
body_checks = regexp:/etc/postfix/body-deny
canonical_maps = hash:/etc/postfix/canonical
command_directory = /usr/sbin
config_directory = /etc/postfix
daemon_directory = /usr/lib/postfix
daemon_timeout = 5
debug_peer_level = 2
defer_transports =
delay_warning_time = 4h
disable_dns_lookups = no
disable_mime_output_conversion = no
fast_flush_purge_time = 3d
html_directory = /usr/share/doc/packages/postfix/html
inet_interfaces = my ip, localhost
inet_protocols = all
local_recipient_maps =
local_transport = error : local mail delivery disabled
mail_owner = postfix
mail_spool_directory = /var/mail
mailbox_command =
mailbox_size_limit = 0
mailbox_transport =
mailq_path = /usr/bin/mailq
manpage_directory = /usr/share/man
masquerade_classes = envelope_sender, header_sender, header_recipient
masquerade_domains = $mydomain
masquerade_exceptions = root
message_size_limit = 10240000
mydestination =
mydomain = mydomain.com
myhostname = cluster2.mydomain.com
mynetworks = my ip
mynetworks_style = subnet
myorigin = $mydomain
newaliases_path = /usr/bin/newaliases
queue_directory = /var/spool/postfix
readme_directory = /usr/share/doc/packages/postfix/README_FILES
relay_domains = mydomain.com
relayhost =
relocated_maps = hash:/etc/postfix/relocated
sample_directory = /usr/share/doc/packages/postfix/samples
sender_canonical_maps = hash:/etc/postfix/sender_canonical
sendmail_path = /usr/sbin/sendmail
setgid_group = maildrop
smtp_sasl_auth_enable = no
smtp_use_tls = no
smtpd_client_restrictions =
smtpd_delay_reject = yes
smtpd_helo_required = yes
smtpd_helo_restrictions = permit_mynetworks,  check_helo_access
hash:/etc/postfix/helo_access,  reject_non_fqdn_sender,
reject_invalid_hostname, permit
smtpd_recipient_restrictions = check_recipient_access
hash:/etc/postfix/access_alias_local,
reject_unauth_pipelining,reject_non_fqdn_sender,
reject_unknown_recipient_domain,permit_mynetworks,
reject_unauth_destination,  reject_non_fqdn_recipient,
reject_rbl_client bl.spamcop.net,
reject_rbl_client cbl.abuseat.org, reject_rbl_client zen.spamhaus.org,
 reject_rbl_client virbl.dnsbl.bit.nl,   permit
smtpd_sasl_auth_enable = no
smtpd_sender_restrictions = permit_mynetworks,
reject_non_fqdn_sender, reject_unknown_sender_domain,  permit
smtpd_use_tls = no
strict_8bitmime = no
strict_rfc821_envelopes = no
transport_maps = hash:/etc/postfix/transport
unknown_local_recipient_reject_code = 550
virtual_alias_domains = hash:/etc/postfix/virtual
virtual_alias_maps = hash:/etc/postfix/virtual

Some emails are being sent and some are being received.
The mta was workig fine till yesterday.

Any suggestions???
Thanks !

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