Postfix 2.8.6 imported into NetBSD-current


October 30, 2011 posted by Matthias Scheler

Postfix 2.8.6 was imported into NetBSD-current last Friday. The changes since Postfix 2.8.5 are:
  • The Postfix SMTP daemon sent "bare" newline characters instead of <CR><LF> when a header_checks REJECT pattern matched multi-line header. This bug was introduced with Postfix 1.1.

  • The Postfix SMTP daemon sent "bare" newline characters instead of <CR><LF> when an smtpd_proxy_filter returned a multi-line response. This bug was introduced with Postfix 2.1.

  • For compatibility with future EAI (email address internationalization) implementations, the Postfix MIME processor no longer enforces the strict_mime_encoding_domain check on unknown message subtypes such as message/global*. This check is disabled by default.

  • The Postfix master daemon could report a panic error ("master_spawn: at process limit") after the process limit for some service was reduced with "postfix reload". This bug existed in all Postfix versions.

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Postfix 2.8.5 imported into NetBSD-current


September 10, 2011 posted by Matthias Scheler

Postfix 2.8.5 was imported into NetBSD-current today. The changes since Postfix 2.8.4 are:
  • The Postfix Milter client logged a "milter miltername: malformed reply" error when a Milter sent an SMTP response without enhanced status code (i.e. "XXX Text" instead of "XXX X.X.X Text").
  • The Postfix Milter client sent a random {client_connections} macro value when the remote SMTP client was not subject to any smtpd_client_* limit. As a workaround, it now sends a zero value instead.
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Postfix 2.8.4 imported into NetBSD-current


July 31, 2011 posted by Matthias Scheler

Postfix 2.8.4 was imported into NetBSD-current today. The changes since Postfix 2.8.2 are:
  • Performance: a high load of DSN success notification requests could slow down the queue manager. Solution: make the trace client asynchronous, just like the bounce and defer clients.
  • The local(8) delivery agent ignored table lookup errors in mailbox_command_maps, mailbox_transport_maps, fallback_transport_maps and (while bouncing mail to alias) alias owner lookup.
  • Workaround: dbl.spamhaus.org rejects lookups with "No IP queries" even if the name has an alphanumerical prefix. We play safe, and skip both RHSBL and RHSWL queries for names ending in a numerical suffix.
  • The "sendmail -t" command reported "protocol error" instead of "file too large", "no space left on device" etc.
  • The Postfix Milter client reported a temporary error instead of "file too large" in three cases.
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Postfix 2.8.2 imported into NetBSD-current


March 23, 2011 posted by Matthias Scheler

Postfix 2.8.2 was imported into NetBSD-current today. The changes since Postfix 2.8.1 are:
  • Bugfix: postscreen DNSBL scoring error. When a client disconnected and then reconnected before all DNSBL results for the earlier session arrived, DNSBL results for the earlier session would be added to the score for the later session. This is very unlikely to have affected any legitimate mail.
  • Workaround: the SMTP client did not support mail to [ipv6:ipv6addr].
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Postfix 2.8.1 imported into NetBSD-current


March 02, 2011 posted by Matthias Scheler

Postfix 2.8.1 was imported into NetBSD-current today. The changes since Postfix 2.7.* are:
  • The postscreen daemon (a zombie blocker in front of Postfix) is now included with the stable release. postscreen now supports TLS and can log the rejected sender, recipient and helo information. See the POSTSCREEN_README file for recommended usage scenarios.
  • Support for DNS whitelisting (permit_rhswl_client), and for pattern matching to filter the responses from DNS white/blacklist servers (e.g., reject_rhsbl_client zen.spamhaus.org=127.0.0.[1..10]).
  • Improved message tracking across SMTP-based content filters; the after-filter SMTP server can log the before-filter queue ID (the XCLIENT protocol was extended).
  • Support for 'footers' that are appended to SMTP server "reject" responses. See "smtpd_reject_footer" in the postconf(5) manpage.
[2 comments]

 

Postfix 2.7.2 imported into NetBSD-current


November 27, 2010 posted by Matthias Scheler

Postfix 2.7.2 was imported into NetBSD-current today. The changes since Postfix 2.7.1 are:
  • Postfix no longer automatically appends the system default CA (certificate authority) certificates, when it reads the CA certificates specified with {smtp, lmtp, smtpd}_tls_CAfile or with {smtp, lmtp, smtpd}_tls_CApath. This prevents third-party certificates from getting mail relay permission with the permit_tls_all_clientcerts feature. Unfortunately, this change may cause compatibility problems with configurations that rely on certificate verification for other purposes. To get the old behavior, specify "tls_append_default_CA = yes".
  • A prior fix for compatibility with Postfix < 2.3 was incomplete. When pipe-to-command delivery fails with a signal, mail is now correctly deferred, instead of being returned to sender.
  • Poor smtpd_proxy_filter TCP performance over loopback (127.0.0.1) connections was fixed by adapting the output buffer size to the MTU.
  • The SMTP server no longer applies the reject_rhsbl_helo feature to non-domain forms such as network addresses. This would cause false positives with dbl.spamhaus.org.
  • The Postfix SMTP server failed to deliver a "421" response and hang up the connection after Milter error. Instead, the server delivered a "503 Access denied" response and left the connection open, due to some Postfix 1.1 workaround for RFC 2821.
  • The milter_header_checks parser failed to enable any of the actions that have no effect on message delivery (warn, replace, prepend, ignore, dunno, and ok).
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Postfix 2.7.1 imported into NetBSD-current


June 17, 2010 posted by Matthias Scheler

Postfix 2.7.1 was imported into NetBSD-current today. The major changes since Postfix 2.6.6 are:
  • Improved before-queue content filter performance. With smtpd_proxy_options = speed_adjust, the Postfix SMTP server receives the entire message before it connects to a before-queue content filter. Typically, this allows Postfix to handle the same mail load with fewer content filter processes.
  • Improved address verification performance. The verify database is now persistent by default, and it is automatically cleaned periodically. Under overload conditions, the Postfix SMTP server no longer waits up to 6 seconds for an address probe to complete.
  • Support for reputation management based on the local SMTP client IP address. This is typically implemented with FILTER transportname: actions in access maps or header/body checks, and mail delivery transports in master.cf with unique smtp_bind_address values.
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Postfix 2.6.6 imported into NetBSD-current


April 17, 2010 posted by Matthias Scheler

Postfix 2.6.6 was imported into NetBSD-current today. The following bugs have been fixed since version 2.6.5:
  • postmulti -p command did not skip disabled instances.
  • In the multi_instance_wrapper parameter, the expansion of $command_directory and $daemon_directory was broken.
  • The address_verify_poll_count parameter value was not made stress-dependent by default. This defeated the purpose of making other settings stress-dependent by default with Postfix 2.6.
  • Milter applications would hang up after receiving an unexpected SMFIC_HEADER (mail header) command. This problem happened with Milters that (legitimately) do not send replies for SMFIC_RCPT (recipient address) or SMFIC_DATA (start of message) commands.
  • Core dump while an printing error message for a malformed %<letter> sequence in LDAP, MySQL or PostgreSQL lookup table configuration.
  • Mail with zero recipients was forever stuck in the queue. This happened when postsuper -r was run after all the recipients of a message were delivered (or bounced), but before the message was deleted from the queue.
  • With hostnames such as 1-2-3-4, the valid_hostname() fuction did not recognize the - as a non-numeric character, causing a legitimate name to be rejected as invalid.
  • The VRFY command did not accept a mailbox address inside <>.
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openresolv imported into NetBSD


November 21, 2009 posted by Roy Marples

openresolv has been imported into NetBSD, which allows more than one daemon to update /etc/resolv.conf sanely and configure local nameservers for enhanced DNS, especially if running on a VPN. dhcpcd already uses resolvconf when available and dhclient in NetBSD has been patched to use it.

This is important for NetBSD, as many packages support resolvconf, but only when /sbin/resolvconf exists. This meant that a lot of packages that supported resolvconf, failed to work with any resolvconf implementation from pkgsrc.

PPP users who maintain their own scripts are encouraged to try it out :)

[1 comment]

 

Summer of Code results: A tool to dump and restore pf(4) state


October 18, 2009 posted by Christos Zoulas

This summer I mentored Arnaud Degroote's Summer of Code project 'A tool to dump/restore the pf state table'.

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Postfix 2.6.5 imported into NetBSD-current


August 31, 2009 posted by Matthias Scheler

Postfix 2.6.5, the latest stable version of the popular mail transport agent, was imported into NetBSD-current today. The following bugs have been fixed since version 2.6.2:
  • The Postfix Milter client got out of step with a Milter application after the application sent a "quarantine" request at end-of-message time. The Milter application would still be in the end-of-message state, while Postfix would already be working on the next SMTP event, typically, QUIT or MAIL FROM. In the latter case, Milter responses for the previously-received email message would be applied towards the next MAIL FROM transaction. This problem was diagnosed with help from Alban Deniz.
  • The Postfix SMTP server would abort with an "unexpected lookup table" error when an SMTPD policy server was mis-configured in a particular way.
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Google Summer of Code: Improve and Extend resize_ffs


June 30, 2009 posted by Christopher Berardi

The utility resize_ffs is a program intended to resize Berkeley Fast File Systems (FFS) by either growing or shrinking them. This filesystem is the standard filesystem for the NetBSD operating system -- a free, fast, secure, and highly portable Unix-like Open Source operating system.

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