I'm having a problem with Postfix 2.4.6, built from source on Solaris 10.
Locally delivered mail is placed in maildirs on an NFS-imported disk. The NFS
server uses file system quotas. Using alias_maps, mail for root is sent to
several users.
When one of the expanded recipients goes over quota, Postfix successfully
delivers the mail to all other expanded recipients and reports a failed
delivery for the user who is over quota. The mail goes into the queue for
another delivery attempt a few minutes later.
However, what's queued seems to be the original (un-expanded) recipient, so
at the next attempt, the alias is expanded again, and the users who are under
quota get another copy, while the user that is over quota gets another
failure, and the mail is re-queued again. And so it goes, around and around,
until someone notices and increases the offending user's quota temporarily,
allowing the deliveries to succeed completely and the queue to drain.
How can I get Postfix to just re-attempt delivery to the user over quota, not
the others?
The sample below has a two-step alias expansion (syslog-all -> root ->
user1,...), but the same happens for mail sent directly to root.
aliases:
syslog-all: root
root: user1,useroverquota,user2,user3,user4,user5,user6,user7
A sample piece of mail in mailq:
F03CF3B469 1092 Mon Aug 3 20:13:22 r...@example.com
(maildir delivery failed: error writing message: Disc quota exceeded)
useroverqu...@example.com
syslog-...@example.com
Syslog:
Aug 4 00:14:08 ns1 postfix/smtpd[21102]: [ID 197553 mail.info] 775993B4F5:
client=pc1.example.com[10.0.177.250]
Aug 4 00:14:08 ns1 postfix/cleanup[21008]: [ID 197553 mail.info] 775993B4F5:
message-id=<200908032214.n73me812061...@pc1.example.com>
Aug 4 00:14:08 ns1 postfix/qmgr[665]: [ID 197553 mail.info] 775993B4F5:
from=<r...@example.com>, size=5316, nrcpt=1
(queue active)
Aug 4 00:14:08 ns1 postfix/local[21103]: [ID 197553 mail.info] 775993B4F5:
to=<us...@example.com>,
orig_to=<syslog-...@example.com>, relay=local, delay=0.13,
delays=0.09/0/0/0.04, dsn=2.0.0, status=sent (delivered to
maildir)
Aug 4 00:14:08 ns1 postfix/local[21103]: [ID 197553 mail.info] 775993B4F5:
to=<useroverqu...@example.com>,
orig_to=<syslog-...@example.com>, relay=local, delay=0.18,
delays=0.09/0/0/0.09, dsn=4.2.2, status=deferred (maildir
delivery failed: error writing message: Disc quota exceeded)
Aug 4 00:14:08 ns1 postfix/local[21103]: [ID 197553 mail.info] 775993B4F5:
to=<us...@example.com>,
orig_to=<syslog-...@example.com>, relay=local, delay=0.42,
delays=0.09/0/0/0.33, dsn=2.0.0, status=sent (delivered to
maildir)
Aug 4 00:14:08 ns1 postfix/local[21103]: [ID 197553 mail.info] 775993B4F5:
to=<us...@example.com>,
orig_to=<syslog-...@example.com>, relay=local, delay=0.47,
delays=0.09/0/0/0.38, dsn=2.0.0, status=sent (delivered to
maildir)
Aug 4 00:14:08 ns1 postfix/local[21103]: [ID 197553 mail.info] 775993B4F5:
to=<us...@example.com>,
orig_to=<syslog-...@example.com>, relay=local, delay=0.5, delays=0.09/0/0/0.41,
dsn=2.0.0, status=sent (delivered to
maildir)
Aug 4 00:14:09 ns1 postfix/local[21103]: [ID 197553 mail.info] 775993B4F5:
to=<us...@example.com>,
orig_to=<syslog-...@example.com>, relay=local, delay=0.58,
delays=0.09/0/0/0.49, dsn=2.0.0, status=sent (delivered to
maildir)
Aug 4 00:14:09 ns1 postfix/local[21103]: [ID 197553 mail.info] 775993B4F5:
to=<us...@example.com>,
orig_to=<syslog-...@example.com>, relay=local, delay=0.65,
delays=0.09/0/0/0.56, dsn=2.0.0, status=sent (delivered to
maildir)
Aug 4 00:14:09 ns1 postfix/local[21103]: [ID 197553 mail.info] 775993B4F5:
to=<us...@example.com>,
orig_to=<syslog-...@example.com>, relay=local, delay=0.72,
delays=0.09/0/0/0.63, dsn=2.0.0, status=sent (delivered to
maildir)
Aug 4 00:20:31 ns1 postfix/qmgr[665]: [ID 197553 mail.info] 775993B4F5:
from=<r...@example.com>, size=5316, nrcpt=1
(queue active)
Aug 4 00:20:34 ns1 postfix/local[22951]: [ID 197553 mail.info] 775993B4F5:
to=<us...@example.com>,
orig_to=<syslog-...@example.com>, relay=local, delay=386,
delays=383/3.1/0/0.02, dsn=2.0.0, status=sent (delivered to
maildir)
Aug 4 00:20:34 ns1 postfix/local[22951]: [ID 197553 mail.info] 775993B4F5:
to=<useroverqu...@example.com>,
orig_to=<syslog-...@example.com>, relay=local, delay=386,
delays=383/3.1/0/0.04, dsn=4.2.2, status=deferred (maildir
delivery failed: error writing message: Disc quota exceeded)
Aug 4 00:20:34 ns1 postfix/local[22951]: [ID 197553 mail.info] 775993B4F5:
to=<us...@example.com>,
orig_to=<syslog-...@example.com>, relay=local, delay=386,
delays=383/3.1/0/0.06, dsn=2.0.0, status=sent (delivered to
maildir)
Aug 4 00:20:34 ns1 postfix/local[22951]: [ID 197553 mail.info] 775993B4F5:
to=<us...@example.com>,
orig_to=<syslog-...@example.com>, relay=local, delay=386,
delays=383/3.1/0/0.07, dsn=2.0.0, status=sent (delivered to
maildir)
Aug 4 00:20:34 ns1 postfix/local[22951]: [ID 197553 mail.info] 775993B4F5:
to=<us...@example.com>,
orig_to=<syslog-...@example.com>, relay=local, delay=386,
delays=383/3.1/0/0.08, dsn=2.0.0, status=sent (delivered to
maildir)
Aug 4 00:20:34 ns1 postfix/local[22951]: [ID 197553 mail.info] 775993B4F5:
to=<us...@example.com>,
orig_to=<syslog-...@example.com>, relay=local, delay=386, delays=383/3.1/0/0.1,
dsn=2.0.0, status=sent (delivered to
maildir)
Aug 4 00:20:34 ns1 postfix/local[22951]: [ID 197553 mail.info] 775993B4F5:
to=<us...@example.com>,
orig_to=<syslog-...@example.com>, relay=local, delay=386,
delays=383/3.1/0/0.15, dsn=2.0.0, status=sent (delivered to
maildir)
Aug 4 00:20:34 ns1 postfix/local[22951]: [ID 197553 mail.info] 775993B4F5:
to=<us...@example.com>,
orig_to=<syslog-...@example.com>, relay=local, delay=386,
delays=383/3.1/0/0.18, dsn=2.0.0, status=sent (delivered to
maildir)
[ ... lots more attempts for the same queue ID after these two, but they all
look the same ... ]
postconf -n:
alias_database = dbm:/p/local/mail/mailalias/aliases
alias_maps = dbm:/p/local/mail/mailalias/aliases
command_directory = /opt/admin/postfix/sbin
config_directory = /opt/admin/postfix/etc
daemon_directory = /opt/admin/postfix/libexec
debug_peer_level = 2
html_directory = /opt/admin/postfix/doc/html
inet_interfaces = $myhostname
line_length_limit = 8192
local_header_rewrite_clients = static:all
local_recipient_maps = unix:passwd.byname $alias_maps
mail_owner = postfix
mail_spool_directory = /ld/mailstore/
mailbox_size_limit = 0
mailq_path = /opt/admin/postfix/bin/mailq
manpage_directory = /opt/admin/postfix/man
masquerade_classes = envelope_sender, envelope_recipient, header_sender,
header_recipient
masquerade_domains = example.com
message_size_limit = 0
mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain
myhostname = mailhost.example.com
myorigin = $mydomain
newaliases_path = /opt/admin/postfix/bin/newaliases
queue_directory = /var/spool/postfix
readme_directory = /opt/admin/postfix/doc
recipient_delimiter = +
sample_directory = /etc/postfix
sendmail_path = /opt/admin/postfix/lib/sendmail
setgid_group = postdrop
transport_maps = dbm:/opt/admin/postfix/etc/transport
unknown_local_recipient_reject_code = 550
--
Karl-Johan Karlsson
