Hi,

I have read somewhere that if you put  "/^Received:/ HOLD"  in header
checks; then all the message will be in queue and will be waiting for
delivery. In such case after getting all the message hold, you can use
postsuper -H [-H queue_id (un-hold)] to deliver selected messages.



Thanks/regards,
Vishal Agarwal

-----Original Message-----
From: owner-postfix-us...@postfix.org
[mailto:owner-postfix-us...@postfix.org] On Behalf Of Noel Jones
Sent: Sunday, March 18, 2012 5:13 AM
To: postfix-users@postfix.org
Subject: Re: Putting all outgoing mail on hold?

On 3/17/2012 9:48 AM, Jesper Dybdal wrote:
> Is there a simple way to put all outgoing mail (i.e., everything that
> would normally be processed by the default "smtp" instance) into the
> HOLD queue?
> 
> The reason I would like to do that is that the IP address on which I run
> my little server is about to change, and I would like outgoing mail to
> be held until I am sure that the new address has a proper reverse DNS
> and is not in any problematic DNSBLs.  I could also just block outgoing
> port 25 with a firewall rule, but using HOLD will give me better
> control: I can then release individual mails if I want to.


You can use a check_recipient_access map that puts everything
non-local on hold.

This needs to be the first rule in one of the smtpd_*_restrictions
sections so that all SMTP mail will be subjected to it.  And, as a
guideline, you don't want rules of this sort in
smtpd_recipient_restrictions due to the danger of a typo mistake
making you an open relay.

Note that smtpd restrictions don't apply to mail submitted via the
sendmail(1) command line interface -- such as users with a login
shell, system/cron mail, sometimes webmail.

It would probably be prudent to do the firewall block until you see
where mail is going.

Also note that HOLD is a message-level restriction.  If a message
has both local and non-local recipients, all will be put on HOLD.

# main.cf
smtpd_sender_restrictions =
  check_recipient_access =
      regexp:/etc/postfix/hold_outgoing.regexp

# hold_outgoing.regexp
/example\.com$/  DUNNO  skip my domain
/^/   HOLD  outgoing delivery suspended





  -- Noel Jones

Reply via email to