Invalid links failing linkcheck

The following links need fixing as of today:

SRU/reference/exception-Certbot-Updates.rst:39: [broken] /howto/standard:
SRU/reference/exception-Postfix-Updates.rst:12: [broken] http://bazaar.launchpad.net/~ubuntu-bugcontrol/qa-regression-testing/master/view/head:/scripts/test-postfix.py: 404 Client Error: Not Found for url: http://bazaar.launchpad.net/~ubuntu-bugcontrol/qa-regression-testing/master/view/head:/scripts/test-postfix.py
SRU/reference/exception-Squid-Updates.rst:81: [broken] http://build.squid-cache.org/: HTTPConnectionPool(host='build.squid-cache.org', port=80): Max retries exceeded with url: / (Caused by NameResolutionError("<urllib3.connection.HTTPConnection object at 0x76cba9e8df20>: Failed to resolve 'build.squid-cache.org' ([Errno -2] Name or service not known)"))
SRU/reference/exception-DPDK-Updates.rst:95: [broken] http://dpdk.org/doc/dts/gsg/intro.html: 404 Client Error: Not Found for url: http://doc.dpdk.org/dts/gsg/intro.html
contributors/bug-triage/bug-tags.md:137: [broken] http://kernel.ubuntu.com/~kernel-ppa/info/kernel-version-map.html: 404 Client Error: Not Found for url: https://kernel.ubuntu.com/~kernel-ppa/info/kernel-version-map.html
SRU/reference/exception-UbuntuImage-Updates.rst:44: [broken] http://people.canonical.com/~vorlon/official-models/: 403 Client Error: Forbidden for url: https://people.canonical.com/~vorlon/official-models/
contributors/bug-triage/bug-tags.md:175: [broken] http://uec-images.ubuntu.com/releases: HTTPConnectionPool(host='uec-images.ubuntu.com', port=80): Max retries exceeded with url: /releases (Caused by NameResolutionError("<urllib3.connection.HTTPConnection object at 0x76cba9e8f350>: Failed to resolve 'uec-images.ubuntu.com' ([Errno -2] Name or service not known)"))
who-makes-ubuntu/developers/dmb-joining-delegated.md:23: [broken] http://www.mythbuntu.org/development/policy: HTTPConnectionPool(host='www.mythbuntu.org', port=80): Max retries exceeded with url: /development/policy (Caused by NameResolutionError("<urllib3.connection.HTTPConnection object at 0x76cba9e8f8a0>: Failed to resolve 'www.mythbuntu.org' ([Errno -2] Name or service not known)"))
SRU/internal.rst:113: [broken] https://bazaar.launchpad.net/~ubuntu-sru/ubuntu-archive-tools/phased-update-overrides/view/head:/phased-updates-overrides.txt: 404 Client Error: Not Found for url: https://bazaar.launchpad.net/~ubuntu-sru/ubuntu-archive-tools/phased-update-overrides/view/head:/phased-updates-overrides.txt
release-team/list-of-releases.md:130: [broken] http://www.ubuntu.com/news/ubuntu-7.10-eol: 404 Client Error:  for url: https://ubuntu.com/news/ubuntu-7.10-eol
SRU/reference/exception-Curtin-Updates.rst:99: [broken] http://162.213.35.104:8080/: HTTPConnectionPool(host='162.213.35.104', port=8080): Max retries exceeded with url: / (Caused by ConnectTimeoutError(<urllib3.connection.HTTPConnection object at 0x76cba9e8ebe0>, 'Connection to 162.213.35.104 timed out. (connect timeout=30)'))
SRU/reference/exception-OpenVPN-Updates.rst:113: [broken] https://community.openvpn.net/openvpn/wiki/ChangesInOpenvpn25#Changesin2.5.3: 403 Client Error: Forbidden for url: https://community.openvpn.net/openvpn/wiki/ChangesInOpenvpn25
community/membership/member-application.md:144: [broken] https://community.kde.org/Kubuntu/Membership: 403 Client Error: Forbidden for url: https://community.kde.org/Kubuntu/Membership
SRU/reference/exception-OpenVPN-Updates.rst:79: [broken] https://community.openvpn.net/openvpn/wiki/SettingUpBuildslave: 403 Client Error: Forbidden for url: https://community.openvpn.net/openvpn/wiki/SettingUpBuildslave
SRU/reference/exception-OpenVPN-Updates.rst:28: [broken] https://community.openvpn.net/openvpn/wiki/SupportedVersions: 403 Client Error: Forbidden for url: https://community.openvpn.net/openvpn/wiki/SupportedVersions
release-team/freezes.md:235: [broken] https://dev.launchpad.net/Translations/LanguagePackSchedule: 404 Client Error: Not Found for url: https://documentation.ubuntu.com/launchpad/developer/Translations/LanguagePackSchedule
SRU/reference/exception-UbuntuAdvantageTools-Updates.rst:227: [broken] https://github.com/canonical/ubuntu-pro-client/blob/docs/dev-docs/howtoguides/release_a_new_version.md: 404 Client Error: Not Found for url: https://github.com/canonical/ubuntu-pro-client/blob/docs/dev-docs/howtoguides/release_a_new_version.md
SRU/reference/exception-Bind9-Updates.rst:68: [broken] https://github.com/isc-projects/bind9/actions: 404 Client Error: Not Found for url: https://github.com/isc-projects/bind9/actions
contributors/new-package/create-a-new-package.md:4: [broken] https://help.launchpad.net/Packaging/PPA: 404 Client Error: Not Found for url: https://documentation.ubuntu.com/launchpad/user/Packaging/PPA
who-makes-ubuntu/councils/dmb-rules.md:52: [broken] https://irclogs.ubuntu.com/2009/10/13/#ubuntu-meeting.html: Anchor 'ubuntu-meeting.html' not found
community/matrix/room-ownership/regain-control.md:14: [broken] https://help.launchpad.net/YourAccount: 404 Client Error: Not Found for url: https://documentation.ubuntu.com/launchpad/user/YourAccount
maintainers/niche-package-maintenance/rustc/update-rust.md:377: [broken] https://launchpad.net/ubuntu/+source/libonig-dev: 404 Client Error: Not Found for url: https://launchpad.net/ubuntu/+source/libonig-dev
SRU/reference/exception-OpenJDK-Updates.rst:77: [broken] https://launchpad.net/~openjdk-private/+archive/ubuntu/bootstrap/+packages: 404 Client Error: Not Found for url: https://launchpad.net/~openjdk-private/+archive/ubuntu/bootstrap/+packages
release-team/list-of-releases.md:105: [broken] https://lists.ubuntu.com/archives/ubuntu-announce/2010-October/000164.html: 404 Client Error: Not Found for url: https://lists.ubuntu.com/archives/ubuntu-announce/2010-October/000164.html
SRU/reference/exception-PostgreSQL-Updates.rst:81: [broken] https://pgdgbuild.dus.dg-i.net/: HTTPSConnectionPool(host='pgdgbuild.dus.dg-i.net', port=443): Max retries exceeded with url: / (Caused by NameResolutionError("<urllib3.connection.HTTPSConnection object at 0x76cba9d24b90>: Failed to resolve 'pgdgbuild.dus.dg-i.net' ([Errno -2] Name or service not known)"))
community/membership/member-application.md:93: [broken] https://web.libera.chat/#ubuntu-meeting: Anchor 'ubuntu-meeting' not found