Fixes for custom subdomain names

emailwiz.sh

@@ -38,7 +38,7 @@ apt install postfix dovecot-imapd dovecot-sieve opendkim spamassassin spamc
 # Check if OpenDKIM is installed and install it if not.
 which opendkim-genkey >/dev/null 2>&1 || apt install opendkim-tools
 domain="$(cat /etc/mailname)"
-subdom="mail"
+subdom=${MAIL_SUBDOM:-mail}
 maildomain="$subdom.$domain"
 certdir="/etc/letsencrypt/live/$maildomain"
 
@@ -232,7 +232,7 @@ chmod g+r /etc/postfix/dkim/*
 # Generate the OpenDKIM info:
 echo "Configuring OpenDKIM..."
 grep -q "$domain" /etc/postfix/dkim/keytable 2>/dev/null ||
-echo "$subdom._domainkey.$domain $domain:mail:/etc/postfix/dkim/mail.private" >> /etc/postfix/dkim/keytable
+echo "$subdom._domainkey.$domain $domain:$subdom:/etc/postfix/dkim/$subdom.private" >> /etc/postfix/dkim/keytable
 
 grep -q "$domain" /etc/postfix/dkim/signingtable 2>/dev/null ||
 echo "*@$domain $subdom._domainkey.$domain" >> /etc/postfix/dkim/signingtable
@@ -272,7 +272,7 @@ for x in dovecot postfix opendkim spamassassin; do
 	service "$x" restart && printf " ...done\\n"
 done
 
-pval="$(tr -d "\n" </etc/postfix/dkim/mail.txt | sed "s/k=rsa.* \"p=/k=rsa; p=/;s/\"\s*\"//;s/\"\s*).*//" | grep -o "p=.*")"
+pval="$(tr -d "\n" </etc/postfix/dkim/$subdom.txt | sed "s/k=rsa.* \"p=/k=rsa; p=/;s/\"\s*\"//;s/\"\s*).*//" | grep -o "p=.*")"
 dkimentry="$subdom._domainkey.$domain	TXT	v=DKIM1; k=rsa; $pval"
 dmarcentry="_dmarc.$domain	TXT	v=DMARC1; p=none; rua=mailto:dmarc@$domain; fo=1"
 spfentry="@	TXT	v=spf1 mx a:$maildomain -all"