Sender Authentication Error Codes

Invalid SPF record

3~25, 27~32

No SPF record

2

Internal error

-99, 1, 26

-99

Internal error

1

Insufficient memory

2

No SPF record

3

Syntax error

4

Modifiers contain prefixes

5

Invalid characters found

6

Unknown mechanisms found

7

Invalid option found

8

Invalid CIDR length

9

Required option is missing

10

Internal error

11

Invalid %-escape character

12

Invalid macro variable

13

Subdomain truncation depth too large

14

Invalid delimiter character

15

Option string too long

16

Excessive mechanisms

17

Excessive modifiers

18

Excessive DNS lookups used in mechanisms

19

Invalid IPv4 address

20

Invalid IPv6 address

21

Invalid mechanism prefix

22

SPF result is unknown

23

Uninitialized variable

24

Modifier not found

25

Required setting not configured

26

DNS lookup unsuccessful

27

Invalid hostname or format

28

Invalid or missing TLD in hostname

29

Ignore mechanisms after "all:"

30

SPF result is permerror when an include recursive query returns none

31

Recursive include

32

Multiple SPF or TXT records found

51

IP address is 0.0.0.0

52

from and ehlo parameters are null

53

none rule matched

54

neutral rule matched

55

softfail rule matched

56

fail rule matched

57

temperror rule matched

58

permerror rule matched

Invalid DKIM record

1, 23~24, 116, 34, 36, 38, 40, 41, 42, 43, 46, 108, 111

No DKIM record

22, 103, 104

Invalid DKIM signature

2~5, 7~21, 25~27, 31~33, 44~45, 102, 105

DKIM signature mismatch

28, 37, 101

Internal error

-1, 6, 39, 107, 112~115 and all others

-1

Internal error

PermError

0

Successful

Pass

1

Unsupported version

Fail

2

Invalid domain (d=/i=)

PermError

3

Signature expired

Fail

4

Signature in the future

Fail

5

x= < t=

Fail

6

Obsolete

Fail

7

Invalid c= value in header

Neutral

8

Invalid c= value in body

Neutral

9

Missing a= value

PermError

10

Invalid a= value

Neutral

11

Missing h= value

PermError

12

Invalid l= value

Neutral

13

Invalid q= value

Neutral

14

Invalid q= option

Neutral

15

Missing d=value

PermError

16

d= value is empty

Neutral

17

Missing s= value

PermError

18

s= value is empty

Neutral

19

Missing b= value

PermError

20

b= value is empty

Neutral

21

b= value is corrupt

PermError

22

No key found in DNS

None

23

Bad DNS reply

Neutral

24

Unsuccessful DNS reply

TempError

25

Missing bh= value

PermError

26

bh= value is empty

Neutral

27

Bad bh= value

PermError

28

Signature mismatch

Fail

29

Unauthorized subdomain

TempError

30

Multiple records returned

TempError

31

h= value is empty

Neutral

32

Missing required entries in h= value

Neutral

33

l= value exceeds body size

Neutral

34

Signing required not met

Neutral

35

Unknown key version

Neutral

36

Unknown key hash

Neutral

37

Signature-key hash mismatch

PermError

38

Not an email key

Neutral

39

Obsolete

Fail

40

Missing key type

Neutral

41

Unknown key type

Neutral

42

Key revoked

PermError

43

Undecodable key

PermError

44

Missing v= tag

PermError

45

v= tag is empty

Fail

46

Insufficient key bits

PermError

101

Bad signature

Fail

102

No signature available

Fail

103

Public key not found

None

104

No domain key to verify

None

105

Syntax error

Fail

106

Resource unavailable

Fail

107

Internal error

Fail

108

Key revoked

Fail

109

Invalid function parameter

Fail

110

Function not implemented

Fail

111

Unable to retrieve key

Fail

112

Callback request rejected

Fail

113

Invalid callback result

Fail

114

Callback timeout

Fail

115

Callback timeout

Fail

116

Multiple DNS replies

Fail

Invalid DMARC record

2~5, 11

No DMARC record

1, 6, 9, 10, 12

Authentication unsuccessful

13

Alignment check unsuccessful

21

Internal error

7, 8

0

Successful

1

No data

2

NULL context received

3

Invalid v= value

4

Invalid p= value

5

Missing p= value

6

No domain found

7

Unable to allocate memory

8

Not a macro

9

No DMARC record

10

Domain does not exist

11

Recoverable DNS error

12

Undefined TLD type

13

From: domain not available

14

No DMARC record found for custom policy

15

Accept message based on policy settings

16

Reject message based on policy settings

17

Quarantine message based on policy settings

18

Monitor message and generate report based on policy settings

19

Apply domain policy ('p')

20

Apply sub-domain policy ('sp')

21

Alignment check unsuccessful