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限制部分Postfix用户只能内部收发的例子

来源:  作者:

配置方法:

1)在main.cf里定义如下的smtpd_restriction_classes:

QUOTE:
# restrictions
smtpd_restriction_classes = local_out_only local_in_only
local_out_only = check_recipient_access hash:/etc/postfix/local_domains, reject
local_in_only = check_sender_access hash:/etc/postfix/local_domains, reject

2)将main.cf里的smtpd_recipient_restrctions定义为:

QUOTE:
smtpd_recipient_restrictions =
        check_sender_access hash:/etc/postfix/local_out_senders
        check_recipient_access hash:/etc/postfix/local_in_senders
        permit_mynetworks,
        permit_sasl_authenticated,
        reject_non_fqdn_hostname,
        reject_non_fqdn_sender,
        reject_non_fqdn_recipient,
        reject_unauth_destination,
        reject_unauth_pipelining,
        reject_invalid_hostname,

3)编辑/etc/postfix/local_in_senders:

QUOTE:
foo@extmail.org local_in_only
bar@extmail.org local_in_only

4)编辑/etc/postifx/local_out_senders:

QUOTE:
foo@extmail.org local_out_only
bar@extmail.org local_out_only

5)编辑/etc/postfix/local_domains:

QUOTE:
internal.foo.com         OK
internal.bar.com         OK

6)为3,4,5建立对应的hash文件:

QUOTE:
# postmap hash:/etc/postfix/local_in_senders
# postmap hash:/etc/postfix/local_out_senders
# postmap hash:/etc/postfix/local_domains

这样就定义了extmail.org域名里两个用户foo和bar,只允许和internal.foo.com和internel.bar.com 两个内部域的用户来往邮件,对于外部的邮件则没有收或发的能力。如果外部邮件企图给这2个用户发送,则遇到如下错误:

QUOTE:
554 5.7.1 <foo@extmail.org>: Recipient address rejected: Access denied

如果这2个内部用户要给外部用户发email,将遇到如下错误:

QUOTE:
554 5.7.1 <bar@extmail.org>: Sender address rejected: Access denied

目前这样的配置就可以比较完整的实现内部用户的功能需求了。其实这种配置的方法和之前的帖子道理一样,关键得分清楚什么阶段,调用什么restrictions即可。

Tags:限制 部分 Postfix
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