exim - Could not complete sender verify callout

Hi,
On my dedicated hosting server I am using exim-4.52.
The callout option is activated.
It stops a lot of spam but also some real mails.
I want to configure exim to exclude this type of checking for some domains.
The problem is that it doesn't work as expected and I don't know how to make it working.

Let's suppose the domain I want to exclude from checking is mail.xxx.com.
In my exim.conf I have in the check_recipient ACL (acl_smtp_rcpt = check_recipient) the line:
require verify = sender/callout

I tried before this line:
condition = ${if !match {$sender_address_domain}{mail.xxx.com}}

It doesn't work.

Any help is real appreciated.


Thanks a lot

 

 

 

 

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