Rob Gunther via Exim-users <exim-users@???> (Mo 16 Sep 2019 03:22:45 CEST):
> Bummer, I see the $domain variable is not available. RTFM and I see the
> following note:
>
> 15. Data for message ACLs
> In the case of RCPT (but not MAIL or DATA), $domain and $local_part are set
> from the argument address. The entire SMTP command is available in
> $smtp_command.
>
> That sucks, as I don't know who the recipient is the virus-infected message
> is.
The data ACL runs *once* per message. The message can have multiple
recipients, so which domain do you expect in $domain?
Though a "$recipients" variable exists for the DATA acl.
If you've different DATA policies for different recipients, you've to
single them out at RCPT stage.
# part of the RCPT ACL
defer condition = $recipients_count
Or, if you DATA policies are bound to the domain, you've to check if the
domain is known already from a previous recipient, and, if it's the
same, accept the message, otherwise defer it:
# part of the RCPT ACL
defer condition = ${if def:acl_m_domain}
condition = ${if !eq{$domain}{$acl_m_domain}}
accept set acl_m_domain = $domain
Using the $domain as a key for a policy lookup is left as an excercise
for the reader :)
Best regards from Dresden/Germany
Viele Grüße aus Dresden
Heiko Schlittermann
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