fallback_relay not getting used

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fallback_relay not getting used
\ Justin Krejci (13 Jun 2007)
. \ Victor Duchovni (13 Jun 2007)
. . \ Justin Krejci (13 Jun 2007)
. . . \ Victor Duchovni (13 Jun 2007)

3 msg	Maildir
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Subject:	fallback_relay not getting used
Group:	Postfix-users
From:	Justin Krejci
Date:	13 Jun 2007

# rpm -q postfix
postfix-2.2.1-3

This is just a plain relay only server (no local mail).

Log example:
Jun 13 00:25:14 mr-mw-05 postfix/smtp[10821]: CD2676050F:
to=<XYZ>, relay=none, delay=39334, status=deferred (connect to
SCRUB[IP SCRUBBED]: Connection timed out)

# postconf | grep "fallback_relay ="
fallback_relay = [10.0.0.1]

This was working previously. connections to the fallback_relay server are
very fast when done via telnet.
If I replace everything in the transport map with
* :[10.0.0.1]
then requeue the mail, all of the deferred mail shoots out to the 10.0.0.1
right away.

I tried restarting postfix (and even a reboot). No change from those.
Disabling content filter made no difference either.
Mail does get delivered normally, it is just mail that fails to get sent
for one reason or another (timeouts, etc).

Can anyone help determine why the fallback_relay is no longer getting used?

postconf -n

alias_maps = hash:/etc/aliases
allow_percent_hack = no
append_dot_mydomain = no
biff = no
canonical_maps = hash:/etc/postfix/canonical
command_directory = /usr/sbin
config_directory = /etc/postfix
content_filter = smtp:[127.0.0.1]:10024
daemon_directory = /usr/lib/postfix
debug_peer_level = 2
default_destination_concurrency_limit = 200
default_destination_recipient_limit = 20
default_process_limit = 500
defer_transports =
disable_dns_lookups = no
fallback_relay = [10.0.0.1]
hopcount_limit = 50
html_directory = /usr/share/doc/packages/postfix/html
inet_interfaces = all
inet_protocols = ipv4
mail_name = MailRoute
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 =
masquerade_exceptions = root
maximal_backoff_time = 3600s
maximal_queue_lifetime = 7d
message_size_limit = 512000000
minimal_backoff_time = 300s
mydestination = $myhostname, localhost.$mydomain
mynetworks = 192.168.168.0/24
newaliases_path = /usr/bin/newaliases
qmgr_message_active_limit = 100000
qmgr_message_recipient_limit = 100000
queue_directory = /var/spool/postfix
queue_run_delay = 300s
readme_directory = /usr/share/doc/packages/postfix/README_FILES
relay_destination_concurrency_limit = 100
relay_domains = hash:/etc/postfix/transport
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_connect_timeout = 5s
smtp_data_done_timeout = 600s
smtp_data_init_timeout = 30s
smtp_data_xfer_timeout = 60s
smtp_helo_timeout = 35s
smtp_mail_timeout = 30s
smtp_quit_timeout = 60s
smtp_rcpt_timeout = 30s
smtp_sasl_auth_enable = no
smtp_use_tls = no
smtpd_client_restrictions =
smtpd_helo_required = no
smtpd_helo_restrictions =
smtpd_recipient_limit = 10000
smtpd_recipient_restrictions = permit_mynetworks,reject_unauth_destination
smtpd_sasl_auth_enable = no
smtpd_sender_restrictions = hash:/etc/postfix/access
smtpd_use_tls = no
strict_rfc821_envelopes = no
swap_bangpath = no
transport_maps = hash:/etc/postfix/transport
undisclosed_recipients_header = To: undisclosed-recipients
unknown_local_recipient_reject_code = 550