Whitelist For Exim Sender Verify Callout

Author: Guido Faecke
Submited At: 2007-05-24
Votes: 0

You are missing emails, because they got rejected by exim for the following reason "could not complete sender verify callout"? We can fix this! All we need is a whitelist. On the command execute "touch /etc/whitelist_senders"

In WHM, in the top most edit box add (if there is anything else in the text box add this bellow it):
addresslist whitelist_senders = wildlsearch;/etc/whitelist_senders

Still in WHM. scroll down to where there are three text boxes together. This is the begin ACL section. In the middle box scroll down until you find:

#sender verifications are required for all messages that are not sent to lists
require verify = sender/callout
accept domains = +local_domains
endpass

and change it to:

#sender verifications are required for all messages that are not sent to lists
deny
!verify = sender/callout
!senders = +whitelist_senders
accept domains = +local_domains
endpass

Still in the middle box scroll down to the end and change:

#!!# ACL that is used after the DATA command
check_message:
require verify = header_sender
accept

to this:

#!!# ACL that is used after the DATA command
check_message:
deny
!verify = header_sender
!senders = +whitelist_senders
accept

Save and exit. Now try to send and receive email to make sure everything is still working. If all is ok add the address in question to the whitelist and see if it works.

Then put the sender addresses in the file /etc/whitelist_senders, one per line, e.g.
someone@domain1.tld
*@domain2.tld

Was this article useful?
YES | NO

Whitelist For Exim Sender Verify Callout

Other useful links