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kockiren
Asked: 2012-04-19 23:06:53 +0800 CST

Postfix restriction classes for virtual alias

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Hey we use postfix as Mailsystem and the config contain virtual alias table for address verification. We also use a simple List for administrative use. The list is in /etc/postfix/virtual written as "[email protected] userxy"

The list and usermappings works fine but the problem is that we want protect some adresses for internal use only. So i add following lines to main.cf

smtpd_recipient_restrictions = 
      check_recipient_access hash:/etc/postfix/protected_destinations,
      permit_mynetworks, 
      permit_sasl_authenticated, 
      reject_unauth_destination

smtpd_restriction_classes = insiders_only 
insiders_only = check_sender_access hash:/etc/postfix/insiders, reject

The file protected_destinations contain:

[email protected]             insiders_only

The file insiders contain:

domain.tld        DUNNO

Output from postconf -n:

alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
broken_sasl_auth_clients = yes
config_directory = /etc/postfix
inet_interfaces = all
mailbox_size_limit = 0
mailbox_transport = cyrus
message_size_limit = 0
mydestination = domain.tld,domain2.tld
myhostname = domain.tld
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 192.168.100.0/24
myorigin = /etc/mailname
recipient_delimiter = +
relay_domains = domain.tld
relayhost = [x.x.x.x]
smtpd_recipient_restrictions = permit_mynetworks,        permit_sasl_authenticated,        reject_unauth_destination,   hash:/etc/postfix/access,   hash:/etc/postfix/virtual-user_access
smtpd_sasl_auth_enable = yes
smtpd_sasl_authenticated_header = yes
smtpd_sasl_path = smtpd
smtpd_sasl_security_options = noanonymous
virtual_alias_domains = /etc/postfix/virtual-domains
virtual_alias_maps = hash:/etc/postfix/virtual
virtual_mailbox_limit = 0

But it dosent work, i can send mail from external Address to [email protected] can anyone explain what i do wrong?

Here is a Logfile about a mail from extern to [email protected]:

Apr 19 16:57:34 serverx postfix/smtpd[15963]: 777A51762F1: client=smarthost.host[192.168.100.xy], sasl_method=LOGIN, sasl_username=userxy
Apr 19 16:57:34 serverx postfix/cleanup[15966]: 777A51762F1: message-id=<[email protected]>
Apr 19 16:57:34 serverx postfix/qmgr[15959]: 777A51762F1: from=<[email protected]>, size=1720, nrcpt=2 (queue active)
Apr 19 16:57:34 serverx postfix/pipe[15972]: 777A51762F1: to=<[email protected]>, orig_to=<[email protected]>, relay=cyrus, delay=0.24, delays=0.06/0.01/0/0.17, dsn=2.0.0, status=sent (delivered via cyrus service)
Apr 19 16:57:34 serverx postfix/pipe[15969]: 777A51762F1: to=<[email protected]>, orig_to=<[email protected]>, relay=cyrus, delay=0.24, delays=0.06/0/0/0.18, dsn=2.0.0, status=sent (delivered via cyrus service)
Apr 19 16:57:34 serverx postfix/qmgr[15959]: 777A51762F1: removed
email postfix

1 Answers

  1. In order to restrict access to internal lists we have the follwoing:

    smtpd_recipient_restrictions =
hash:/etc/postfix/access
hash:/etc/postfix/virtual-users_access

    Then in the /etc/postfix/acccess map we have things like 

    all@          permit_mynetworks,reject
list2@        permit_mynetworks,reject

    And in virtual-users_access things like 

    anonymous@domain     permit_mynetworks,reject
user1@domain        permit_mynetworks,reject
user2@domain        permit_mynetworks,reject
    • 2