forwarding (SPF error?) and Return-Receipt bounce issue

[Tootle]

Hi, I'm trying to find solution but I must ask you guys for help.

 [email protected]
    (ultimately generated from [email protected])
    SMTP error from remote mail server after MAIL FROM:<[email protected]> SIZE=3006:
    host mx.wp.pl [212.77.101.4]: 550 SPF Error:
    Received-SPF: neutral (smtp.wp.pl: 188.116.4.48 is neither permitted nor denied by domain of gmail.com) client-ip=188.116.4.48; [email protected];

#1 : In this scenario I'm creating a mail from [email protected] --TO--> [email protected] [domain set on DA box on its 2nd IP 188.116.52.25] (which also forwards to [email protected] [external mail] ]) and that forwarding ends with aforementioned bounced error message ( 188.116.4.48 is a main IP of DA box)

from domain dns administration

duan.pl.	TXT	"v=spf1 a mx ip4:188.116.4.48 ~all"

what is more

#2 users mails with Return-Receipt flag bounces to admin account on the box with [Delayed Bounce]?? Is that because of when /etc/virtual/limit_unknown reaches it's max?

Any chances to help figure it out that bounce-mess ? Big thanks in advance.

using SpamBlockerTechnology* powered exim.conf, Version 4.1
my exim.conf

 

[scsi]

The spf ip needs to be the ip of the mail server that the mail comes from.

 

[Tootle]

Thanks. That's OK.
Problem is when any of my users comopse a message via Roundcube with return-receipt flag. The coming back info from receipient is blocked

exim/mainlog

cancelled by system filter: Delayed bounce message ignored

I believe thats because of
part of etc/system_filter.exim

if $sender_address is ""
then
     if ${lookup{${extract{2}{@}{$recipients}}}lsearch{/etc/virtual/domains}{yes}{no}} is "no"
     then
         headers add "Old-Subject: $h_subject:"
         headers remove "Subject"
         headers add "Subject: [Delayed Bounce]$h_old-subject:"
         headers remove "Old-Subject"
         deliver "[email protected]"

         noerror fail text "Delayed bounce message ignored"
         seen finish
     endif
endif
if not first_delivery
then
  finish
endif

Thanks for any ideas how to correct that behaviour.