mail forwarding loop

Hello all,

Could anyone offer some insight into what may be causing this error. System was
working fine up until early this evening, then suddenly started doing this.
Emails are downloaded by fetchmail, and test is a valid system account. Emails
sent to a virtual domain go through perfectly. Have replaced the domain with
(example.com), but otherwise an intact log message.


Log message:

Jun 16 00:54:18 mailserver postfix/smtpd[96480]: connect from
localhost.example.com[127.0.0.1] Jun 16 00:54:19 mailserver
postfix/smtpd[96480]: 03918AE2C:
client=localhost.example.com[127.0.0.1] Jun 16 00:54:19 mailserver
postfix/cleanup[96482]: 03918AE2C:
message-id=<20040615234747.3A32083417@mail.server> Jun 16 00:54:19 mailserver
postfix/qmgr[96476]: 03918AE2C: from=<mathfretwell@blueyonder.co.uk>,
size=1650, nrcpt=1 (queue active) Jun 16 00:54:19 mailserver fetchmail[96448]:
flushed Jun 16 00:54:19 mailserver postfix/local[96483]: 03918AE2C:
to=<test@example.com>, relay=local, delay=1, status=SOFTBOUNCE
(mail forwarding loop for test@example.com) Jun 16 00:54:19
mailserver postfix/smtpd[96480]: disconnect from
localhost.example.com[127.0.0.1]


Postconf -n output:

alias_database = hash:/etc/aliases, hash:/mail/mailaliases
alias_maps = hash:/etc/aliases, hash:/mail/mailaliases
command_directory = /usr/sbin
config_directory = /usr/local/etc/postfix
daemon_directory = /mail/daemons
debug_peer_level = 2
home_mailbox = Maildir/
html_directory = no
local_recipient_maps =
luser_relay = junkmail
mail_owner = postfix
mailq_path = /usr/bin/mailq
manpage_directory = /usr/local/man
maximal_queue_lifetime = 1d
message_size_limit = 20480000
mydestination = $myhostname, localhost.$mydomain, $mydomain
mynetworks = 192.168.0.0/16, 127.0.0.0/8
myorigin = $mydomain
newaliases_path = /usr/bin/newaliases
queue_directory = /mail/postfix/spool
queue_minfree = 102400000
readme_directory = no
sample_directory = /usr/local/etc/postfix
sendmail_path = /usr/sbin/sendmail
setgid_group = postdrop
soft_bounce = yes
unknown_local_recipient_reject_code = 450

(Soft bounce is only enabled until I get this fault sorted).
If you need any more details, just let me know.

Thanks in advance,

Matt