$ swaks --pipe 'exim -bh 8.8.8.8' -f … -t info@example.org,office@example.org -q rcpt
<-  **** SMTP testing session as if from host 8.8.8.8
<-  **** This is not for real!
…
 -> RCPT TO:<info@example.org>
>>> using ACL "acl_check_recipient"
>>> processing "defer"
>>> check !acl = same_domain
>>> using ACL "same_domain"
>>> processing "accept"
>>> check condition = ${if !def:acl_m_domain}
>>>                 = true
>>> check set acl_m_domain = $domain
>>>                        = example.org
>>> accept: condition test succeeded in ACL "same_domain"
…
<-  250 Accepted
 -> RCPT TO:<office@example.com>
>>> using ACL "acl_check_recipient"
>>> processing "defer"
>>> using ACL "same_domain"
>>> check condition = ${if !def:acl_m_domain}
>>>                 = 
>>> accept: condition test failed in ACL "same_domain"
>>> processing "accept"
>>> check domains = $acl_m_domain
>>> example.com in "example.org"? no (end of list)
>>> accept: condition test failed in ACL "same_domain"
>>> processing "deny"
>>> deny: condition test succeeded in ACL "same_domain"
>>> defer: condition test succeeded in ACL "acl_check_recipient"
…
<** 451 multiple recipient with same domain only
