El 29/06/2016 a las 10:40 a.m., Fabián M Sales escribió:
Hello list,
In a top of my file config:
localpartlist mail_list_this_server = /opt/exim/mail_list_this_server
-
I need to block outgoing mails which is not from an existing and valid
email account on the server.
Some of the tests performed is for example:
I have this ACL:
acl_not_smtp
deny condition = ${if exists {/opt/exim/mail_list_this_server}}
message = From no esta en el archivo mail_list_this_server.
$sender_from
!condition =
${lookup{${domain:$header_from:}}lsearch{/opt/exim/mail_list_this_server}
{yes}{no}}
logwrite = From no esta en el archivo mail_list_this_server
My problem is if I use ${domain:$header_from:} only give a domain, but
how I can see full from the account? (user@domain) to compare with my file
You can extract the full email address with ${address:$header_from}
I can do this without comparing it to a file? any ideas?
It depends where do you have all valid mail accounts... If there is a
database, a ldap or local users there is were you check if there is a
valid user. You should also enforce some smtp auth to do this the right
way, and then compare the from header with this value (I think is
$authenticated_sender) to avoid forging a valid from header from another
user
I have on My list /opt/exim/mail_list_this_server
[email protected]
[email protected]
....
..
Best Regards.
Fabián Sales.
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