No, it’s just a service that’s running without me thinking about it.
My setup is:
- debian as system
- exim for smtp
- courier for pop3
- mariadb for accounts
But I’d like to make a point that’s not being made in any of the other comments. It does not require an SMTP server to send e-mail. All you have to do is lookup the MX DNS record of the domain, connect to that SMTP server and write a few commands fx.:
EHLO senderdomain.tld
MAIL FROM:<yourmail@yourdomain.tld>
RCPT TO:<recipient@recipientdomain.tld>
DATA
Subject: Blabla
Bla bla
.
A solution I’ve used for the glibc problem, is to build on an older distribution in a chroot. There is also this project which might be of use to pick a specific version of glibc. The project README also explain how to do it manually.
As for distribution, I prefer something like makeself.sh, that installs to either ~/.local/ or if it is to be installed system-wide to /usr/local or /opt. The concept is just a small shell script appended with a compressed archive, it is easy to modify and even create by hand using standard tools like cat. This is a method widely used by native Linux games.