> Per the welcome message you received when you joined the list:
> 

That would be like 5+ years ago.  I've slept since then.

> TO REPORT A PROBLEM see:
> http://www.postfix.org/DEBUG_README.html#mail
> 
> At a minimum, postfix version, output of postconf -n and unedited
> NON-verbose logs exhibiting the problem should be provided...


Config aside, which is included below, it seems to cleanup some after resetting 
all of the ipvsadm's for port 25 to be persistent.  I'm sure it's a partial 
problem with the connections being lost after x seconds from NAT'ing.  So, as 
per the original question, does anyone else run this similar configuration 
(postfix + ipvsadm + wlc nat) and if so, how do they table these lost 
connection problems.

$ postconf -n (same on all 6 nodes)
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
command_directory = /usr/sbin
config_directory = /etc/postfix
daemon_directory = /usr/libexec/postfix
data_directory = /var/lib/postfix
debug_peer_level = 2
html_directory = no
inet_interfaces = all
inet_protocols = all
mail_owner = postfix
mailq_path = /usr/bin/mailq.postfix
manpage_directory = /usr/share/man
message_size_limit = 40960000
mydestination = $myhostname, localhost.$mydomain, localhost
newaliases_path = /usr/bin/newaliases.postfix
queue_directory = /var/spool/postfix
readme_directory = /usr/share/doc/postfix-2.7.0/README_FILES
relay_domains = hash:/etc/postfix/maps/relay_domain
relay_recipient_maps = hash:/etc/postfix/maps/relay_recipient
relay_transport = hash:/etc/postfix/maps/relay_transport
sample_directory = /usr/share/doc/postfix-2.7.0/samples
sendmail_path = /usr/sbin/sendmail.postfix
setgid_group = postdrop
smtp_tls_note_starttls_offer = yes
smtp_use_tls = yes
smtpd_recipient_restrictions = permit_mynetworks,   
reject_unknown_sender_domain,   reject_unauth_destination,   
hash:/etc/postfix/custom/access,   hash:/etc/postfix/custom/postmaster,   
reject_non_fqdn_recipient,    reject_unlisted_recipient,   
reject_unknown_sender_domain,   reject_invalid_hostname,   reject_rbl_client 
zen.spamhaus.org,   reject_rbl_client bl.spamcop.net,   reject_rbl_client 
rhsbl.ahbl.org,   check_policy_service inet:xxxxx:5847,   
reject_unauth_pipelining
smtpd_sender_restrictions = reject_unknown_sender_domain,   
hash:/etc/postfix/custom/sender_reject,   permit
smtpd_tls_cert_file = /etc/ssl/certs/
smtpd_tls_key_file = /etc/ssl/private/
smtpd_tls_loglevel = 1
smtpd_tls_received_header = yes
smtpd_tls_session_cache_timeout = 3600s
smtpd_use_tls = yes
strict_rfc821_envelopes = yes
tls_random_source = dev:/dev/urandom
transport_maps = hash:/etc/postfix/maps/transport
unknown_local_recipient_reject_code = 550

relevant log file entries (sender in this case is a large commercial entity):
May 13 18:48:33 host01 postfix/smtpd[18110]: connect from sender[senderip]
May 13 18:48:33 host01 postfix/smtpd[18110]: setting up TLS connection from 
sender[senderip]
May 13 18:48:33 host01 postfix/smtpd[18110]: Anonymous TLS connection 
established from sender[senderip]: TLSv1 with cipher RC4-SHA (128/128 bits)
May 13 18:48:37 host01 postfix/smtpd[18110]: B30AAAFE4F: sender[senderip]]
May 13 18:48:42 host01 postfix/smtpd[18110]: lost connection after DATA 
(1723601 bytes) from sender[senderip]
May 13 18:48:42 host01 postfix/smtpd[18110]: disconnect from sender[senderip]


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