By not advertising SMTPUTF8 support at the start, senders may opt to transmit recipient internationalized domain names in IDNA form instead, which will be deliverable.
Incoming mail with internationalized domains was probably working prior to our move to Ubuntu 18.04 when postfix's SMTPUTF8 support became enabled by default.
The previous commit is retained because Mail-in-a-Box users might prefer to keep SMTPUTF8 on for outbound mail, if they are not using internationalized domains for email, in which case the previous commit fixes the 'relay access denied' error even if the emails aren't deliverable.
Software updates:
* Upgraded Nextcloud from 17.0.6 to 20.0.1 (with Contacts from 3.3.0 to 3.4.1 and Calendar from 2.0.3 to 2.1.2)
* Upgraded Roundcube to version 1.4.9.
Mail:
* The MTA-STA max_age value was increased to the normal one week.
Control Panel:
* Two-factor authentication can now be enabled for logins to the control panel. However, keep in mind that many online services (including domain name registrars, cloud server providers, and TLS certificate providers) may allow an attacker to take over your account or issue a fraudulent TLS certificate with only access to your email address, and this new two-factor authentication does not protect access to your inbox. It therefore remains very important that user accounts with administrative email addresses have strong passwords.
* TLS certificate expiry dates are now shown in ISO8601 format for clarity.
-----BEGIN PGP SIGNATURE-----
iQFDBAABCgAtFiEEX0wOcxPM10RpOyrquSBB9MEL3YEFAl+v8k4PHGp0QG9jY2Ft
cy5pbmZvAAoJELkgQfTBC92BMYUIAJTD1iKzY1SoDNSp8JMPn2sWusOnJNrnvYEV
vsrBM4AzwJv3DIZKSkYCitbTQW2FsTcjF6Jl5PCavEmAGe55AIKAPM/52Uq6jqDE
aR8EZvI9ca1i7yR7DOHEI043QSPmp/iCFD48vvmKgN/LZy67TaHaOlGJbc3nfpk0
y7ejMpF/6RP6ik4snnRQoWTFShaOpB9WcEVnUO7CHZdWcpSCZ55c9yi6A6ExGk7e
97R5+JN1MgOdZ6rzWZuMWiz7EZ/Ew4jYLZpOwg8qJm0HNbYJ6+/xxsQBwaQzyBw3
TsTl4GmunNPfoNrmKdJeLy0sBwiVBv/rysjWjim5v8jAYBoKoUQ=
=2oRU
-----END PGP SIGNATURE-----
gpgsig -----BEGIN PGP SIGNATURE-----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=ZMFZ
-----END PGP SIGNATURE-----
Merge upstream v0.51
--------------------------
Setup:
* When upgrading from versions before v0.40, setup will now warn that ownCloud/Nextcloud data cannot be migrated rather than failing the installation.
Mail:
* An MTA-STS policy for incoming mail is now published (in DNS and over HTTPS) when the primary hostname and email address domain both have a signed TLS certificate installed, allowing senders to know that an encrypted connection should be enforced.
* The per-IP connection limit to the IMAP server has been doubled to allow more devices to connect at once, especially with multiple users behind a NAT.
DNS:
* autoconfig and autodiscover subdomains and CalDAV/CardDAV SRV records are no longer generated for domains that don't have user accounts since they are unnecessary.
* IPv6 addresses can now be specified for secondary DNS nameservers in the control panel.
TLS:
* TLS certificates are now provisioned in groups by parent domain to limit easy domain enumeration and make provisioning more resilient to errors for particular domains.
Control Panel:
* The control panel API is now fully documented at https://mailinabox.email/api-docs.html.
* User passwords can now have spaces.
* Status checks for automatic subdomains have been moved into the section for the parent domain.
* Typo fixed.
Web:
* The default web page served on fresh installations now adds the `noindex` meta tag.
* The HSTS header is revised to also be sent on non-success responses.
-----BEGIN PGP SIGNATURE-----
iQFDBAABCgAtFiEEX0wOcxPM10RpOyrquSBB9MEL3YEFAl9t2AgPHGp0QG9jY2Ft
cy5pbmZvAAoJELkgQfTBC92BZNkH/1jIGoWTz0xlS+e+TeXpHoCp/7zYAvQq/a/y
vj9t1N1+bBg6Ywbd8UxyvOHwuL/UQU/5LTq6hk3gD+2ARfJUvDRbb047Xzlisg3N
LhNoVhVbsxqKP1X2ZjeIBq9DgzMavuB64Bwd5UNdceM0Addi8KuCDOMF+FNY2t8k
xytGjYdBi1/BG6SLBX+FAm5yrJghmkUJs2FnJjebSyyeV2HP3L1iBrk2N8UBd6PU
fVjde534lgygFZK/8yXJpY2olfLMYJv7CaOMxvaW6RpbMI8VeLwDLfRt5LcrQZqq
YXkuEnUI0eygbQYkeK/Vr1Vey6uQAWzIfbImEglHfvOXsZSYFXs=
=SJNM
-----END PGP SIGNATURE-----
gpgsig -----BEGIN PGP SIGNATURE-----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=VgsY
-----END PGP SIGNATURE-----
Merge v0.50 from upstream
v0.50 (September 25, 2020)
--------------------------
Setup:
* When upgrading from versions before v0.40, setup will now warn that ownCloud/Nextcloud data cannot be migrated rather than failing the installation.
Mail:
* An MTA-STS policy for incoming mail is now published (in DNS and over HTTPS) when the primary hostname and email address domain both have a signed TLS certificate installed, allowing senders to know that an encrypted connection should be enforced.
* The per-IP connection limit to the IMAP server has been doubled to allow more devices to connect at once, especially with multiple users behind a NAT.
DNS:
* autoconfig and autodiscover subdomains and CalDAV/CardDAV SRV records are no longer generated for domains that don't have user accounts since they are unnecessary.
* IPv6 addresses can now be specified for secondary DNS nameservers in the control panel.
TLS:
* TLS certificates are now provisioned in groups by parent domain to limit easy domain enumeration and make provisioning more resilient to errors for particular domains.
Control Panel:
* The control panel API is now fully documented at https://mailinabox.email/api-docs.html.
* User passwords can now have spaces.
* Status checks for automatic subdomains have been moved into the section for the parent domain.
* Typo fixed.
Web:
* The default web page served on fresh installations now adds the `noindex` meta tag.
* The HSTS header is revised to also be sent on non-success responses.
