-------------------------
Security fixes:
* A security issue was discovered in rsync backups. If you have enabled rsync backups, the file `id_rsa_miab` may have been copied to your backup destination. This file can be used to access your backup destination. If the file was copied to your backup destination, we recommend that you delete the file on your backup destination, delete `/root/.ssh/id_rsa_miab` on your Mail-in-a-Box, then re-run Mail-in-a-Box setup, and re-configure your SSH public key at your backup destination according to the instructions in the Mail-in-a-Box control panel.
* Brute force attack prevention was missing for the managesieve service.
Setup:
* Nextcloud was not upgraded properly after restoring Mail-in-a-Box from a backup from v0.40 or earlier.
Mail:
* Upgraded Roundcube to 1.3.10.
* Fetch an updated whitelist for greylisting on a monthly basis to reduce the number of delayed incoming emails.
Control panel:
* When using secondary DNS, it is now possible to specify a subnet range with the `xfr:` option.
* Fixed an issue when the secondary DNS option is used and the secondary DNS hostname resolves to multiple IP addresses.
* Fix a bug in how a backup configuration error is shown.
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Merge tag 'v0.43' of https://github.com/mail-in-a-box/mailinabox
v0.43 (September 1, 2019)
-------------------------
Security fixes:
* A security issue was discovered in rsync backups. If you have enabled
rsync backups, the file `id_rsa_miab` may have been copied to your
backup destination. This file can be used to access your backup
destination. If the file was copied to your backup destination, we
recommend that you delete the file on your backup destination, delete
`/root/.ssh/id_rsa_miab` on your Mail-in-a-Box, then re-run
Mail-in-a-Box setup, and re-configure your SSH public key at your backup
destination according to the instructions in the Mail-in-a-Box control
panel.
* Brute force attack prevention was missing for the managesieve service.
Setup:
* Nextcloud was not upgraded properly after restoring Mail-in-a-Box from
a backup from v0.40 or earlier.
Mail:
* Upgraded Roundcube to 1.3.10.
* Fetch an updated whitelist for greylisting on a monthly basis to
reduce the number of delayed incoming emails.
Control panel:
* When using secondary DNS, it is now possible to specify a subnet range
with the `xfr:` option.
* Fixed an issue when the secondary DNS option is used and the secondary
DNS hostname resolves to multiple IP addresses.
* Fix a bug in how a backup configuration error is shown.
5F4C0E7313CCD744693B2AEAB92041F4C10BDD81
@joshdata squashed pull request #1398, removed some comments, and added these notes:
* The old init.d script for the management daemon is replaced with a systemd service.
* A systemd service configuration is added to configure permissions for munin on startup.
* nginx SSL settings are updated because nginx's options and defaults have changed, and we now enable http2.
* Automatic SSHFP record generation is updated to know that 22 is the default SSH daemon port, since it is no longer explicit in sshd_config.
* The dovecot-lucene package is dropped because the Mail-in-a-Box PPA where we built the package has not been updated for Ubuntu 18.04.
* The stock postgrey package is installed instead of the one from our PPA (which we no longer support), which loses the automatic whitelisting of DNSWL.org-whitelisted senders.
* Drop memcached and the status check for memcached, which we used to use with ownCloud long ago but are no longer installing.
* Other minor changes.
The default timeout for Postfix's maximal_queue_lifetime and bounce_queue_lifetime is 5 days. This is way too long if you expect someone to have an answer and after 5 days you'll get the message that it's not delivered. This disrupts communication. It would be more responsive if the user got the 'can't deliver' error after 24 hours.
Modify outgoing_mail_header_filters and mail-postfix.sh
files to result in the primary hostname, and the public
ip of the server showing in the first mail header route
instead of unknown and 127.0.0.1. This could help lower
the spam score of mail sent from your server to some
public mail services.
A lot of legit mail servers try again between 200 and 285 seconds, then
3 hours later. Why? RFC is not strict about retry timer so postfix and
other MTA have their own intervals. To fix the problem of receiving
these e-mail really latter, I reduced the delay of postgrey to
180 seconds (default is 300 seconds).
The submission port began offering SSLv3.
With `encrypt`, the smtpd_tls_protocols option is ignored and smtpd_tls_mandatory_protocols must be set instead.
see e39b777abc
Even though SMTP (on port 25) is typically opportunistic and a MitM attack can't be prevented, we may as well only offer ciphers that provide some level of security. If a client is so old or misconfigured that it doesn't support newer ciphers, it should hopefully fall back to a non-TLS connection.
Postfix's default was basically anything goes (anonymous and 40-bit ciphers!). Google's MTA's only offer ciphers at 112 bits at greater, and this change approximates that with Postfix's "medium" setting.
Fixes#371
This disallows aNULL and other bad ciphers in the Postfix submission server.
I missed an option in 45e93f7dcc recommended by the blog post I was reading.
Fixes#389.
I added OpenDMARC's milter in fba4d4702e. But this started
setting Authentication-Results headers on outbound mail with failures. Not sure why it
fails at that point, but it shouldn't be set at all. The failure might cause recipients
to junk the mail. See #358.
This commit removes the milter from the SMTP submission (port 587) listener.
John Supplee
Michael Kroes
Joshua Tauberer
Christopher A. DeFlumeri
Tristan Hill
dofl
PortableTech
Morteza Milani
Xoib