Configured SMTP AUTH

Makefile

@@ -51,6 +51,8 @@ all: sendmail-config mail-aliases sendmail-default sm-client-service sendmail-se
 	echo $$(hostname) > /etc/mail/local-host-names
 	@echo "$$MAIL_ALIASES" > /etc/mail/aliases
 	newaliases
+	install -v -Dm644 sendmail.mc /etc/mail
+	cd /etc/mail && m4 m4/cf.m4 sendmail.mc > sendmail.cf
 	@echo "$$SENDMAIL_DEFAULT" > /etc/default/sendmail
 	@echo "$$SM_CLIENT_SERVICE" > /lib/systemd/system/sm-client.service
 	systemctl enable sm-client.service

sendmail.mc

+VERSIONID(`Cyrus IMAP, SASL and STARTTLS for Certo appliance')
+OSTYPE(linux)dnl
+DOMAIN(generic)dnl
+
+dnl ----------------------------------------------------------------------------
+dnl Ensure that local users' addresses have a domain.
+dnl ----------------------------------------------------------------------------
+define(`always_add_domain')dnl
+
+dnl ----------------------------------------------------------------------------
+dnl Authentication (SMTP AUTH).
+dnl A is a workaround for broken MTAs that do not implement RFC 2554.
+dnl The p option tells sendmail: "don't permit mechanisms susceptible to simple
+dnl passive attack (e.g., LOGIN, PLAIN), unless a security layer (think TLS
+dnl tunnel) is active."
+dnl The y option prohibits anonymous logins.
+dnl ----------------------------------------------------------------------------
+define(`confAUTH_OPTIONS', `A p y')dnl
+define(`confAUTH_MECHANISMS', `DIGEST-MD5 CRAM-MD5 PLAIN')dnl
+TRUST_AUTH_MECH(`DIGEST-MD5 CRAM-MD5 PLAIN')dnl
+
+dnl ----------------------------------------------------------------------------
+dnl Privacy.
+dnl ----------------------------------------------------------------------------
+define(`confPRIVACY_FLAGS', `goaway')dnl
+
+MAILER(local)dnl
+MAILER(smtp)dnl