### transport/10_exim4-config_transport-macros
#################################

.ifdef HIDE_MAILNAME
REMOTE_SMTP_HEADERS_REWRITE=*@+local_domains $1@DCreadhost frs : *@ETC_MAILNAME $1@DCreadhost frs
REMOTE_SMTP_RETURN_PATH=${if match_domain{$sender_address_domain}{+local_domains}{${sender_address_local_part}@DCreadhost}{${if match_domain{$sender_address_domain}{ETC_MAILNAME}{${sender_address_local_part}@DCreadhost}fail}}}
.endif

.ifdef REMOTE_SMTP_HELO_FROM_DNS
REMOTE_SMTP_HELO_DATA=${lookup dnsdb {ptr=$sending_ip_address}{$value}{$primary_hostname}}
.endif