I am trying to pick out the IP addresses from Received headers in the
DATA ACL. For now, only for logging, and to start I just want the first
one. Here is what I tried:
acl_check_data:
# Log the Received line IPs from upstream MTAs.
warn
set acl_m_data_rip = ${if match {$bh_received:}{\N[[](\d+[.]\d+[.]\d+[.]\d+)[]]} $1 {}}
warn
condition = $acl_m_data_rip
logwrite = IP address from Received header is $acl_m_data_rip
And this was the result:
temporarily rejected after DATA: failed to expand ACL string \
"${if match {$bh_received:}{\N[[](\d+[.]\d+[.]\d+[.]\d+)[]]} $1 {}}": missing } at end of string
The braces are balanced, so why is a closing one "missing"?
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