adding access restrictions that match transport to limit where mail can come from

Makefile

@@ -55,10 +55,12 @@ menu:
 postfix:
 	if ! grep -q 'transport_maps' "/etc/postfix/main.cf"; then \
 		printf "transport_maps = hash:/etc/postfix/transport" >> "/etc/postfix/main.cf"; \
+		printf "smtpd_sender_restrictions = hash:/etc/postfix/access" >> "/etc/postfix/main.cf"; \
 	fi
 	stow -t "/etc/postfix" postfix
 	sudo chown root /etc/postfix/transport
 	postmap /etc/postfix/transport
+	postmap /etc/postfix/access
 	postfix reload
 
 uninstall:

postfix/access

@@ -0,0 +1,42 @@
+cosmic.voyage      ALLOW
+.aussies.space     ALLOW
+.circumlunar.space ALLOW
+.hashbang.sh       ALLOW
+.thunix.cf         ALLOW
+.thunix.net        ALLOW
+.tildeverse.org    ALLOW
+aussies.space      ALLOW
+circumlunar.space  ALLOW
+ctrl-c.club        ALLOW
+envs.net           ALLOW
+radiofreqs.space   ALLOW
+rw.rs              ALLOW
+fuckup.club        ALLOW
+grex.org           ALLOW
+hashbang.sh        ALLOW
+nand.sh            ALLOW
+rawtext.club       ALLOW
+sdf.org            ALLOW
+thunix.cf          ALLOW
+thunix.net         ALLOW
+tild3.org          ALLOW
+tilde.chat         ALLOW
+tilde.club         ALLOW
+tilde.institute    ALLOW
+tilde.life         ALLOW
+tilde.news         ALLOW
+tilde.pink         ALLOW
+tilde.site         ALLOW
+tilde.team         ALLOW
+tilde.town         ALLOW
+tilde.wiki         ALLOW
+tilde.wtf          ALLOW
+tilde.zone         ALLOW
+tildegit.org       ALLOW
+tildenet.org       ALLOW
+tilderadio.org     ALLOW
+tildeteam.org      ALLOW
+tildeverse.org     ALLOW
+ttm.sh             ALLOW
+yourtilde.com      ALLOW
+*                  REJECT