SSL certificate / VPN

SSL

Let’s Encrypt
https://letsencrypt.org/docs/
https://letsencrypt.org/getting-started/
https://weblog.west-wind.com/posts/2016/Feb/22/Using-Lets-Encrypt-with-IIS-on-Windows

SSL for free
https://www.sslforfree.com/

RapidSSL
https://www.rapidssl.com/

Certbot
https://certbot.eff.org/

https on subdomain
https://se.godaddy.com/community/Managing-Domains/https-on-subdomain/td-p/30668

VPN

https://support.ivacy.com/kb/how-to-configure-pptp-on-your-linksys-router/

qmail

Installing FreeBSD and qmail
http://www.bsd-guide.net/freebsd/freebsd-base/index.php
http://www.bsd-guide.net/freebsd/freebsd-mailserver/index.php
http://www.bsd-guide.net/freebsd/freebsd-spambox/guide/index.php
http://qmailrocks.thibs.com/daemontools.php
http://qmailrocks.thibs.com/qmail-ucspi.php
https://qmail.jms1.net/history.shtml
https://qmail.jms1.net/tls-auth.shtml

Combined Patch AMD64 qmail–smtpd segfault (status 11)
https://www.google.se/search?q=tcpserver+status+11+on+64-bit+freebsd
http://qmail-patch.jms1.narkive.com/TlSh70Q7/combined-patch-amd64-qmail-smtpd-segfault
https://lists.gt.net/qmail/users/137862
https://lists.gt.net/qmail/users/116314
https://forums.freebsd.org/threads/qmail-tls-smtp-auth-patch-broken.31976/
http://qmailwiki.org/Qmail_smtps

ucspi-ssl
http://www.superscript.com/ucspi-ssl/index.html

qmail-smtpd starttls on freebsd 8.0 amd64
http://article.gmane.org/gmane.mail.qmail.jms1-patch/3514

Re: Combined Patch AMD64 qmail–smtpd segfault
http://permalink.gmane.org/gmane.mail.qmail.jms1-patch/3605

Bug 77380 – qmail-smtpd fails after starttls
https://bugs.gentoo.org/77380

https://www.google.se/search?q=DENY_TLS+64-bit+bsd

Mail stuck in queue (JMS1 qMail-patch mailinglist)
http://qmail-patch.jms1.narkive.com/NvOwqxit/mail-stuck-in-the-new-server

ClamAV fails to scan emails
https://www.virtualmin.com/node/16156