/media/sda-magnetic/david/Dok-15-2023-11-27/fernuni-hagen/cs-i-ii/fsm/fsm/lex-yacc-bash-etc/all00030.txt

# client 
# sender 
# recipient
# relay

smtpd_client_restrictions=
smtpd_sender_restrictions=
smtpd_relay_restrictions=
smtpd_recipient_restrictions=
smtpd_data_restrictions=
smtpd_end_of_data_restrictions=
smtpd_etrn_restrictions=
smtpd_helo_restrictions=

mynetworks=
myhostname=
smtpd_helo_required=yes

# permit_mynetworks
# check_policy_service

# unknown
# reject_unknown_client 
# reject_unknown_client_hostname
# reject_unknown_reverse_client_hostname
# reject_unknown_hostname
# reject_unknown_helo_hostname
# reject_unknown_sender_domain
# reject_unknown_recipient_domain

# hostname 
# reject_unknown_client_hostname 
# reject_unknown_reverse_client_hostname 
# reject_unknown_hostname
# reject_non_fqdn_hostname 
# reject_invalid_hostname
# reject_unknown_helo_hostname 

# non_fqdn 
# reject_non_fqdn_hostname
# reject_non_fqdn_sender
# reject_non_fqdn_recipient

# sender
# reject_non_fqdn_sender
# reject_unknown_sender_domain

# recipient
# reject_non_fqdn_recipient
# reject_unknown_recipient_domain

# unauth
# reject_unauth_pipelining
# reject_unauth_destination

a CAPABILITY
a LOGIN "user" "password"
a LIST "" *
a SELECT INBOX
a FETCH 1 RFC822
a STORE 1 +FLAGS (\Seen \Deleted)
a CLOSE
a EXPUNGE
a SEARCH
a LOGOUT

HELO/EHLO
MAIL
DATA 
RST 
VRFY
EXPN
NOOP
QUIT

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/etc/dovecot/dovecot.conf
/etc/dovecot/conf.d/10-auth.conf
/etc/dovecot/conf.d/10-ssl.conf
/etc/dovecot/conf.d/10-master.conf
/etc/dovecot/conf.d/10-mail.conf
/etc/dovecot/conf.d/10-logging.conf
/etc/dovecot/conf.d/10-tcpwrapper.conf
/etc/dovecot/conf.d/10-director.conf
/etc/dovecot/conf.d/15-...conf
/etc/dovecot/conf.d/20-imap.conf
/etc/dovecot/conf.d/20-pop3.conf
/etc/dovecot/conf.d/90-...conf
/etc/dovecot/conf.d/auth-...conf

useradd
userdel
usermod
newgrp
groupdadd
groupdel
groupmod
chsh
chfn
passwd
id

cd
mkdir
cp
mv
mmv
rm
rmdir
unlink

ln
ls

info
exit
echo
man
grep
tre-agrep
nice
head
tail
less

cat
cut

lsof
blkid
lsblk

mount/umount
dd

find
locate
update

date
pwd

shred
sort
split

sync
rsync

var1=Hallo
var2=Welt

echo $var1
echo $var2

echo "Ausgabe"
# Kommentar

#!/bin/bash

./skript.sh
/bin/bash ./skript.sh
bash skript.sh

if [ $var1 == $var2 ]
then
    echo $var1
else
    echo $var2
fi

while [ $var1 == $var2 ]
do
    echo $var1
done

for var3 in "A " "B " "C "
do
    echo $var3
done

typeset -i i=5
i=$(( 4 ))
i=$(( 4+4 ))

while [ $i -le 50 ]
do
    echo $i
    i=$(( $i+1 ))
done