Question

我遇到问题，使用pop3通过JAVAMAIL api连接客户端Exchange服务器。它适用于gmail。请仔细研究，如果是熟悉的话。

我们在尝试连接客户端的Exchange服务器时遇到异常

  javax.mail.MessagingException: Connect failed;
nested exception is:
javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connecti
on?
at com.sun.mail.pop3.POP3Store.protocolConnect(POP3Store.java:210)
at javax.mail.Service.connect(Service.java:295)
at TestPOP3Connection.run(TestPOP3Connection.java:23)
Caused by: javax.net.ssl.SSLException: Unrecognized SSL message, plaintext conne
ction?
at com.sun.net.ssl.internal.ssl.InputRecord.handleUnknownRecord(Unknown
Source)
at com.sun.net.ssl.internal.ssl.InputRecord.read(Unknown Source)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(Unknown Source)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(Un
known Source)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(Unknown Sou
rce)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.startHandshake(Unknown Sou
rce)
at com.sun.mail.util.SocketFetcher.configureSSLSocket(SocketFetcher.java
:507)
at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:238)
at com.sun.mail.pop3.Protocol.<init>(Protocol.java:107)
at com.sun.mail.pop3.POP3Store.getPort(POP3Store.java:261)
at com.sun.mail.pop3.POP3Store.protocolConnect(POP3Store.java:206)
... 2 more

提前致谢罗希特夏尔

Answer 1

您尝试使用SSL进行连接，但是您正在连接到不支持SSL的端口。

Gmail需要SSL，因此您的程序可能已设置为执行此操作，但在更改为使用Exchange服务器时，您可能更改了主机名并将端口号设置为110.POP3的SSL端口号为995。当然，请确保您的Exchange服务器配置为接受该端口上的SSL请求。

使用java mail api连接到Exchange服务器的连接失败

1 个答案: