Package: postfix
Version: 2.9.6-2
Severity: normal
Dear Maintainer,
When a client sends erroneous command on a session, Postfix replies with a 4xx
error message, as expected.
But when too many errors occur, Postfix replies with a second error line:
"421 4.7.0 xxxxx Error: too many errors".
This second message does not respect 4.2 section of RFC 5321, which indicates:
"Every command MUST generate exactly one reply"
(http://tools.ietf.org/html/rfc5321#section-4.2)
For example (we defined smtpd_hard_error_limit=2 in our configuration):
RCPT TO:<x...@xxxxxx-chambon.fr>
450 4.2.0 <x...@xxxxxx-chambon.fr>: Recipient address rejected: Greylisted, see
http://postgrey.schweikert.ch/help/komori-chambon.fr.html
RCPT TO:<y...@xxxxxx-chambon.fr>
450 4.2.0 <y...@xxxxxx-chambon.fr>: Recipient address rejected: Greylisted, see
http://postgrey.schweikert.ch/help/komori-chambon.fr.html
421 4.7.0 servsmtp Error: too many errors
(Connection closed)
The expected behavior would simply be to add the "Too many errors" at the end
of the first line.
Not to create a second one, which lead to analysis error of the mail protocol.
Yours faithfully,
Jeremie LEGRAND
-- System Information:
Debian Release: 7.6
APT prefers stable-updates
APT policy: (900, 'stable-updates'), (900, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 3.2.0-4-amd64 (SMP w/1 CPU core)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages postfix depends on:
ii adduser 3.113+nmu3
ii cpio 2.11+dfsg-0.1
ii debconf [debconf-2.0] 1.5.49
ii dpkg 1.16.15
ii libc6 2.13-38+deb7u3
ii libdb5.1 5.1.29-5
ii libsasl2-2 2.1.25.dfsg1-6+deb7u1
ii libsqlite3-0 3.7.13-1+deb7u1
ii libssl1.0.0 1.0.1e-2+deb7u12
ii lsb-base 4.1+Debian8+deb7u1
ii netbase 5.0
ii ssl-cert 1.0.32
Versions of packages postfix recommends:
ii python 2.7.3-4+deb7u1
Versions of packages postfix suggests:
pn dovecot-common <none>
ii heirloom-mailx [mail-reader] 12.5-2
ii libsasl2-modules 2.1.25.dfsg1-6+deb7u1
pn postfix-cdb <none>
ii postfix-doc 2.9.6-2
pn postfix-ldap <none>
pn postfix-mysql <none>
pn postfix-pcre <none>
pn postfix-pgsql <none>
pn procmail <none>
pn resolvconf <none>
pn sasl2-bin <none>
pn ufw <none>
-- debconf information:
postfix/mailname: xxxxxxxx.xxxxxx-chambon.fr
postfix/tlsmgr_upgrade_warning:
postfix/recipient_delim: +
postfix/main_mailer_type: Internet Site
postfix/retry_upgrade_warning:
postfix/kernel_version_warning:
postfix/relayhost:
postfix/procmail: false
postfix/bad_recipient_delimiter:
postfix/chattr: false
postfix/root_address:
postfix/rfc1035_violation: false
postfix/mydomain_warning:
postfix/mynetworks: 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
postfix/destinations: xxxxxxxx.xxxxxx-chambon.fr,
localhost.xxxxxx-chambon.fr, , localhost
postfix/not_configured:
postfix/sqlite_warning:
postfix/mailbox_limit: 0
postfix/protocols: all
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