On Tue, Feb 17, 2015 at 12:48:45AM +0000, Steve Zeng wrote:
> I am running postfix 2.3.3 on Redhat RHEL 5 for a local SMTP MTA. For
> security purpose, we need to restrict its outbound emails to selected
> destination domains only.
>
> http://www.postfix.org/postconf.5.html#smtpd_recipient_restrictions
>
> The default is:
> smtpd_recipient_restrictions = permit_mynetworks, reject_unauth_destination
>
> I modified it as:
> smtpd_recipient_restrictions = check_recipient_access
> hash:/etc/postfix/local_domains, reject
You'll need to post "postconf -n" output to prove this. Also
relevant master.cf entries in case these contain overrides.
> All outbound emails will be sent to relay host:
> relayhost = mail-vip.local.paygateway.com
>
> /etc/postfix/local_domains
> mycompany.com OK
> hotmail. com OK
>
> However, it looks not effective. I can still send outbound email to anywhere.
Via SMTP from outside, or via sendmail(1) locally?
> Do I miss anything?
http://www.postfix.org/DEBUG_README.html#mail
* relevant non-verbose logs
* postconf -n output
* master entries for relevant services
Please try to not "line-wrap" postconf -n output, while sending
non-HTML email.
--
Viktor.
