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19  
20  
21  package org.apache.james.jspf.core;
22  
23  /**
24   * Interface which holds Constants for SPF
25   */
26  public interface SPF1Constants {
27  
28      /**
29       * Qualifier for PASS
30       */
31      public static final String PASS = "+";
32  
33      /**
34       * Qualifier for NEUTRAL
35       */
36      public static final String NEUTRAL = "?";
37  
38      /**
39       * Qualifier for FAIL
40       */
41      public static final String FAIL = "-";
42  
43      /**
44       * Qualifier for SOFTFAIL
45       */
46      public static final String SOFTFAIL = "~";
47  
48      /**
49       * The valid SPF_VERSION identifier
50       */
51      public static final String SPF_VERSION1 = "v=spf1";
52  
53  }