如何正确配置Postfix和Dovecot？

如何解决如何正确配置Postfix和Dovecot？

我在配置使用Postfix和Dovecot发送和接收邮件时遇到问题 我正在使用redhat7。Postfix版本是2.10.1，而Dovecot版本是2.2.36

我有三个系统帐户。用户1，用户2和用户3这三个帐户可以发送和接收邮件。 user3帐户的特殊性在于，当user1或user2收到电子邮件时，它必须能够启动一个进程。但这是行不通的。 如果有人可以帮助我解决这个问题，欢迎他们提出建议。

谢谢。

这是配置文件 /etc/postfix/main.cf 和 /etc/postfix/master.cf 来自Postfix以及来自Dovecot的 dovecot.conf

/etc/postfix/main.cf
disable_dns_lookups = yes
queue_directory = /var/spool/postfix
command_directory = /usr/sbin
daemon_directory = /usr/libexec/postfix
data_directory = /var/lib/postfix
mail_owner = postfix
myhostname = hostname.dns-server.com
mydomain = dns-server.com
inet_interfaces = all
inet_protocols = all
mydestination = $myhostname,localhost.$mydomain,localhost
unknown_local_recipient_reject_code = 450
mynetworks_style = host
relayhost = mail-server.dns-server.com
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases


debug_peer_level = 2
debugger_command =
         PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin
         ddd $daemon_directory/$process_name $process_id & sleep 5
sendmail_path = /usr/sbin/sendmail.postfix
newaliases_path = /usr/bin/newaliases.postfix
mailq_path = /usr/bin/mailq.postfix
setgid_group = postdrop
html_directory = no
manpage_directory = /usr/share/man
sample_directory = /usr/share/doc/postfix-2.10.1/samples
readme_directory = /usr/share/doc/postfix-2.10.1/README_FILES

/etc/postfix/master.cf
smtp      inet  n       -       n       -       -       smtpd
pickup    fifo  n       -       n       60      1       pickup
cleanup   unix  n       -       n       -       0       cleanup
qmgr      fifo  n       -       n       300     1       qmgr
tlsmgr    unix  -       -       n       1000?   1       tlsmgr
rewrite   unix  -       -       n       -       -       trivial-rewrite
bounce    unix  -       -       n       -       0       bounce
defer     unix  -       -       n       -       0       bounce
trace     unix  -       -       n       -       0       bounce
verify    unix  -       -       n       -       1       verify
flush     unix  n       -       n       1000?   0       flush
proxymap  unix  -       -       n       -       -       proxymap
smtp      unix  -       -       n       -       -       smtp
relay     unix  -       -       n       -       -       smtp
        -o fallback_relay=
showq     unix  n       -       n       -       -       showq
error     unix  -       -       n       -       -       error
discard   unix  -       -       n       -       -       discard
local     unix  -       n       n       -       -       local
virtual   unix  -       n       n       -       -       virtual
lmtp      unix  -       -       n       -       -       lmtp
anvil     unix  -       -       n       -       1       anvil
scache    unix  -       -       n       -       1       scache
maildrop  unix  -       n       n       -       -       pipe
  flags=DRhu user=vmail argv=/usr/local/bin/maildrop -d ${recipient}
old-cyrus unix  -       n       n       -       -       pipe
  flags=R user=cyrus argv=/usr/lib/cyrus-imapd/deliver -e -m ${extension} ${user}
cyrus     unix  -       n       n       -       -       pipe
  user=cyrus argv=/usr/lib/cyrus-imapd/deliver -e -r ${sender} -m ${extension} ${user}
uucp      unix  -       n       n       -       -       pipe
  flags=Fqhu user=uucp argv=uux -r -n -z -a$sender - $nexthop!rmail ($recipient)
ifmail    unix  -       n       n       -       -       pipe
  flags=F user=ftn argv=/usr/lib/ifmail/ifmail -r $nexthop ($recipient)
bsmtp     unix  -       n       n       -       -       pipe
  flags=Fq. user=foo argv=/usr/local/sbin/bsmtp -f $sender $nexthop $recipient
retry     unix  -       -       n       -       -       error
proxywrite unix -       -       n       -       1       proxymap

grep ^[^#] dovecot.conf
protocols = pop3 pop3s
listen = *:110
dict {
  #quota = mysql:/etc/dovecot/dovecot-dict-sql.conf.ext
  #expire = sqlite:/etc/dovecot/dovecot-dict-sql.conf.ext
}
!include conf.d/*.conf
!include_try local.conf