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-rw-r--r--etc/sendmail/freebsd.mc3
1 files changed, 3 insertions, 0 deletions
diff --git a/etc/sendmail/freebsd.mc b/etc/sendmail/freebsd.mc
index 7f91abe..d8339b8 100644
--- a/etc/sendmail/freebsd.mc
+++ b/etc/sendmail/freebsd.mc
@@ -69,6 +69,9 @@ dnl FEATURE(dnsbl, `relays.mail-abuse.org', `"550 Mail from " $&{client_addr} "
dnl MAPS Dial-up User List (DUL): http://maps.vix.com/dul/
dnl FEATURE(dnsbl, `dialups.mail-abuse.org', `"550 Mail from dial-up rejected; see http://mail-abuse.org/dul/enduser.htm"')
+dnl ORBS also offers a multitude of DNS based block hole lists. For more
+dnl information, visit: http://www.orbs.org/usingindex.html
+
dnl Dialup users should uncomment and define this appropriately
dnl define(`SMART_HOST', `your.isp.mail.server')
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