Hi!

 Short:

 and need skip BlackHELO check for "UTM IP"

isip + ispHostnames  work as You describe, but 
-- in case false posive ( UTM pass e-mail, but ASSP blocked)
 -- sender not receved SMTP Error "554 5.7.1 Error: Spam by ZZZ"
 -- this .eml not deleted from Queue of UTM ( in fact is N * e-mails )
-- need duplicate honepots e-mail addreses both UTM and ASSP 


Full:


D.U.>> I am working on a setup and situation dictates that every server here
D.U.>> is behind a NAT firewall. The problem now of course is, that
D.U.>> connections to SMTP daemon are translated to the internal IP of the
D.U.>> firewall, therefor SPF, and a whole lot other checks fail because
D.U.>> ASSP sees them coming from the NAT firewalls internal IP.
 
Grayhat> which is a total nonsense :) see, "NAT != proxy" - this means that
Grayhat> publishing whatever service sitting behind a NAT just means setting up
Grayhat> a "port forwarding" rule and this, in turn, means that whatever
Grayhat> incoming connection to such a port (on the WAN interface) will be
Grayhat> forwarded to the internal box/port and seen by the latter as coming
Grayhat> from the EXTERNAL IP address not from the NAT one; 

Yes


Grayhat>what you described,
Grayhat> instead, is the situation of a box sitting behind a "proxy" of some
Grayhat> kind which accepts incoming connections and proxies them to ASSP; this
Grayhat> makes me think that you're using some kind of "appliance" or "UTM"
Grayhat> which is also implementing incoming mail filtering (and maybe some
Grayhat> kind of spam filtering); 

 Yes
NAT firewall
 -- replace --}
UTM/appliance with integrated mail relay with AntiSpam 

 i.e. Q:  need read as:

D.U.>> I am working on a setup and situation dictates that every server here
D.U.>>is behind a appliance with integrated mail relay with AntiSpam. 
D.U.>>The problem now of course is, that connections to SMTP daemon are 
translated 
D.U.>>to the internal IP of the firewall, 
D.U.>> therefor SPF, and a whole lot other checks fail 
D.U.>> because ASSP sees them coming from internal IP of the appliance with 
integrated mail relay with AntiSpam.

Grayhat>in such a case, given that such a filtering is
Grayhat> carried on by ASSP (and far BETTER than using whatever appliance), 
Grayhat> my suggestion is to disable the "SMTP proxy" in your appliance and let
Grayhat> ASSP do its job (even if sitting behind the NAT/Firewall)

 And my

Fritz Borgstedt> - put the front IP into isip
Fritz Borgstedt> use
Fritz Borgstedt> -Regular Expression to Identify ISP/Secondary Hostnames* 
(ispHostnames)

 and need skip BlackHELO check for "UTM IP"

isip + ispHostnames  work as You describe, but 
-- in case false posive ( UTM pass e-mail, but ASSP blocked)
 -- sender not receved SMTP Error "554 5.7.1 Error: Spam by ZZZ"
 -- this .eml not deleted from Queue of UTM ( in fact is N * e-mails )
-- need duplicate honepots e-mail addreses both UTM and ASSP 


Best regards, Victor Miasnikov
Blog:  http://vvm.blog.tut.by/



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