I'm running Postfix 2.8.1 and Cyrus 2.3.16 on an Ubuntu 10.04 (Lucid)
server.
I'm having trouble with incoming mail from Google's Postini help forum.
The messages I'm getting contain null characters in the body, so Cyrus
is saying "554 5.6.0 Message contains NUL characters (in reply to end
of DATA command)" and is refusing to accept the messages in question.
I added "message_strip_characters = \0" to my Postfix's main.cf and did
a reload of Postfix, but this doesn't seem to have had any effect on the
problem. I did a Google search and found various complaints over the
years from people claiming "message_strip_characters = \0" didn't work
for them, but there didn't seem to be any obvious answer.
Google really ought to fix their software so it doesn't break the RFCs
by generating mail with nulls in the body, but I'm not going to hold my
breath, and I can't afford the petty luxury of refusing to look at an
e-mail reply because Google broke the specs.
See below for my "postconf -n" output. Any ideas?
Rich Wales
Palo Alto, CA, USA
ri...@richw.org
========================================================================
alias_maps = hash:/etc/aliases
command_directory = /usr/sbin
config_directory = /etc/postfix
content_filter = smtp-amavis:[127.0.0.1]:10024
daemon_directory = /usr/lib/postfix
default_destination_concurrency_limit = 1
default_destination_recipient_limit = 1
default_rbl_reply = $rbl_code Service unavailable; $rbl_class [$rbl_what]
blocked using $rbl_domain${rbl_reason?; $rbl_reason}; report problems to
richwales )at( gmail.com
header_checks = pcre:/etc/postfix/ignore_tb_msgid
inet_protocols = ipv4
lmtp_destination_recipient_limit = 1
local_destination_concurrency_limit = 1
local_destination_recipient_limit = 1
local_header_rewrite_clients = permit_sasl_authenticated
local_recipient_maps = hash:/etc/postfix/local_recipients $alias_maps
mail_owner = postfix
mailbox_transport = lmtp:[127.0.0.1]
masquerade_domains = $mydomain
maximal_queue_lifetime = 30d
message_size_limit = 50000000
message_strip_characters = \0
milter_default_action = accept
milter_protocol = 2
mydestination = pcre:/etc/postfix/lan_domains
mydomain = richw.org
myhostname = whodunit.richw.org
myorigin = $myhostname
non_smtpd_milters = unix:/var/run/dkim-filter/dkim-filter.sock
queue_directory = /var/spool/postfix
relay_destination_recipient_limit = 1
relay_domains = indigo.richw.org, goldsmurf.randerzo.net, sandals.richw.org
relayhost = [www.richw.org]
smtp_destination_concurrency_limit = 1
smtp_destination_recipient_limit = 1
smtp_sasl_auth_enable = yes
smtp_sasl_mechanism_filter = PLAIN,LOGIN
smtp_sasl_password_maps = hash:/etc/postfix/sasl_password
smtp_sasl_security_options = noanonymous
smtp_sender_dependent_authentication = yes
smtp_use_tls = yes
smtpd_banner = $myhostname ESMTP $mail_name ($mail_version)
smtpd_delay_open_until_valid_rcpt = no
smtpd_discard_ehlo_keywords = etrn,silent-discard
smtpd_etrn_restrictions = reject
smtpd_helo_restrictions = reject_invalid_helo_hostname
smtpd_milters = unix:/var/run/dkim-filter/dkim-filter.sock
smtpd_restriction_classes = do_postgrey
smtpd_tls_CAfile = /etc/postfix/whodunit.pem
smtpd_tls_auth_only = yes
smtpd_tls_cert_file = /etc/postfix/whodunit.pem
smtpd_tls_key_file = /etc/postfix/whodunit.pem
smtpd_tls_received_header = yes
smtpd_use_tls = yes
soft_bounce = yes
transport_maps = hash:/etc/postfix/transport
unknown_local_recipient_reject_code = 550
virtual_alias_maps = hash:/etc/postfix/virtual_map
virtual_destination_recipient_limit = 1
========================================================================
