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19
20 package org.apache.james.jspf.core;
21
22 import org.apache.james.jspf.core.exceptions.TimeoutException;
23
24 import java.util.List;
25
26 /**
27 * Interface which should be used to access all necassary DNS-Records
28 *
29 */
30 public interface DNSService {
31
32 /**
33 * Retrieve dns records for the given host
34 *
35 * @param request the dns request
36 * @return an array of Strings representing the records
37 * @throws TimeoutException
38 */
39 public List getRecords(DNSRequest request) throws TimeoutException;
40
41 /**
42 * Try to get all domain names for the running host
43 *
44 * @return names A List contains all domain names which could resolved
45 */
46 public List getLocalDomainNames();
47
48 /**
49 * Set the timeout for DNS-Requests
50 *
51 * @param timeOut The timeout in seconds
52 */
53 public void setTimeOut(int timeOut);
54
55 /**
56 * @return the current record limit
57 */
58 public int getRecordLimit();
59
60 /**
61 * Sets a new limit for the number of records for MX and PTR lookups.
62 *
63 * @param recordLimit the new limit (0 => unlimited)
64 */
65 public void setRecordLimit(int recordLimit);
66
67 }