1 files changed, 73 insertions, 0 deletions
diff --git a/rfc1035/spf.h b/rfc1035/spf.h
new file mode 100644
index 0000000..c4afea8
--- /dev/null
+++ b/rfc1035/spf.h
@@ -0,0 +1,73 @@
+/*
+** Copyright 2004 Double Precision, Inc.
+** See COPYING for distribution information.
+*/
+
+#ifndef	rfc1035_spf_h
+#define	rfc1035_spf_h
+
+
+#include "rfc1035/rfc1035.h"
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+/*
+   An SPF client evaluates an SPF record and produces one of seven
+   results:
+
+     None: The domain does not publish SPF data.
+
+     Neutral (?): The SPF client MUST proceed as if a domain did not
+     publish SPF data.  This result occurs if the domain explicitly
+     specifies a "?" value, or if processing "falls off the end" of
+     the SPF record.
+
+     Pass (+): the message meets the publishing domain's definition of
+     legitimacy.  MTAs proceed to apply local policy and MAY accept or
+     reject the message accordingly.
+
+     Fail (-): the message does not meet a domain's definition of
+     legitimacy.  MTAs MAY reject the message using a permanent
+     failure reply code.  (Code 550 is RECOMMENDED.  See [RFC2821]
+     section 7.1.)
+
+     Softfail (~): the message does not meet a domain's strict
+     definition of legitimacy, but the domain cannot confidently state
+     that the message is a forgery.  MTAs SHOULD accept the message
+     but MAY subject it to a higher transaction cost, deeper scrutiny,
+     or an unfavourable score.
+
+   There are two error conditions, one temporary and one permanent.
+
+     Error: indicates an error during lookup; an MTA SHOULD reject the
+     message using a transient failure code, such as 450.
+
+     Unknown: indicates incomplete processing: an MTA MUST proceed as
+     if a domain did not publish SPF data.
+*/
+
+#define SPF_NONE 0
+#define SPF_NEUTRAL '?'
+#define SPF_PASS '+'
+#define SPF_FAIL '-'
+#define SPF_SOFTFAIL '~'
+#define SPF_ERROR '4'
+
+	/* Everything else is SPF_UNKNOWN */
+#define SPF_UNKNOWN '5'
+
+char rfc1035_spf_lookup(const char *mailfrom,
+			const char *tcpremoteip,
+			const char *tcpremotehost,
+			const char *helodomain,
+			const char *mydomain,
+			char *errmsg_buf,
+			size_t errmsg_buf_size);
+
+#ifdef  __cplusplus
+}
+#endif
+
+#endif