On 5/30/2017 9:29 AM, Viktor Dukhovni wrote:
On May 30, 2017, at 9:23 AM, Peter West <[email protected]> wrote:
If the return-path is <> ( empty ) then do the following ;
if domain is robbya.be or robbyb.be route via mailrobby.test.com ; if domain
is robbyc.be then route via mailrobby2.test.com
if /^Return-Path...
This is misconceived from the get-go. The "Return-Path:" header is not
present in email in transit. It is added at the time email is stored
into a mailbox (i.e. by the final-delivery agent) and records the
envelope sender of the message.
Isn't it misconceived in another way as well? Cf. this from
http://www.postfix.org/header_checks.5.html:
"Many people overlook the main limitations of header and body_checks
rules. These rules operate on one logical message header or one body
line at a time. A decision made for one line is not carried over to the
next line."
Doesn't this mean that an "if" used with the content of one line can't
continue with a further check of the content of another line? For
instance (to give an example that doesn't use Return-Path):
if /^From: [email protected]/
/^Subject: unwanted-product/ REJECT
endif
won't work because the From line isn't also a Subject line, and the
result of the "if" won't be remembered from one header line to another.
--
Larry Kuenning
[email protected]
