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Thread: Pop3Server Exception

  1. #1
    guruhs is offline Member
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    Default Pop3Server Exception

    Hello All,
    We are running ZCS 4.5.1 OpenSource Edition on RedHat Ent 4 for quite sometime. Of late we are facing some problem particularly with pop3 users. Getting error "ProtocolHandler - Exception occurred while handling connection"
    whenever a user tries to connect. If i restart zimbra services problem goes away for a while and again starts after sometime. Please see the error from /opt/zimbra/log/mailbox.log below. Appreciate any help.

    2007-06-14 08:15:50,790 INFO [IndexWritersSweeper] [] MailboxIndex - open index
    writers sweep: before=15, closed=0, after=15 (0ms)
    2007-06-14 08:16:29,750 INFO [Pop3Server-40] [] pop - connected
    2007-06-14 08:16:29,753 INFO [Pop3Server-40] [] ProtocolHandler - Exception occ
    urred while handling connection
    javax.net.ssl.SSLHandshakeException: Remote host closed connection during handsh
    ake
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRec ord(SSLSocketImpl.j
    ava:742)
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.perform InitialHandshake(SS
    LSocketImpl.java:1030)
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.writeRe cord(SSLSocketImpl.
    java:622)
    at com.sun.net.ssl.internal.ssl.AppOutputStream.write (AppOutputStream.ja
    va:59)
    at java.io.BufferedOutputStream.flushBuffer(BufferedO utputStream.java:65
    )
    at java.io.BufferedOutputStream.flush(BufferedOutputS tream.java:123)
    at com.zimbra.cs.pop3.Pop3Handler.sendLine(Pop3Handle r.java:382)
    at com.zimbra.cs.pop3.Pop3Handler.sendResponse(Pop3Ha ndler.java:371)
    at com.zimbra.cs.pop3.Pop3Handler.sendOK(Pop3Handler. java:354)
    at com.zimbra.cs.pop3.Pop3Handler.setupConnection(Pop 3Handler.java:115)
    at com.zimbra.cs.tcpserver.ProtocolHandler.run(Protoc olHandler.java:196)
    at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Wo rker.run(Unknown So
    urce)
    at java.lang.Thread.run(Thread.java:595)
    Caused by: java.io.EOFException: SSL peer shut down incorrectly
    at com.sun.net.ssl.internal.ssl.InputRecord.read(Inpu tRecord.java:333)
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRec ord(SSLSocketImpl.j
    ava:723)
    ... 12 more

    Thanks and Regards
    Gururaj

  2. #2
    jholder's Avatar
    jholder is offline Former Zimbran
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    Default

    Code:
    Caused by: java.io.EOFException: SSL peer shut down incorrectly
    I think that's an End of File exception.
    Do you have a commercial cert? You may want to reinstall it.
    Do you know if it's just one client, or many. If it's many, that may indicate some weird problem with the keystore?

    If it's one, try resetting their account on their pop3 client. Is this outlook/windows?

  3. #3
    guruhs is offline Member
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    Default

    Thanks for the reply.

    No we are not using any Commercial Certificates. Just the defaults. This happens with all the pop3 clients. Infact this problem started after one of the administrators accidentally changed the permission on /opt/zimbra folders. I have fixed this by running zmfixperms.

    Regards
    Gururaj

  4. #4
    jholder's Avatar
    jholder is offline Former Zimbran
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    Default

    Great to hear!

  5. #5
    guruhs is offline Member
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    Default

    Hi

    What i meant to say was that i fixed the permissions by running zmfixperms. But
    the Pop3Server Exception errors are still there. All the users use Microsoft Outlook to check pop3 accounts. After sometime none of the pop3 users will be able to connect. Though all the zimbra processes still be running.

  6. #6
    guruhs is offline Member
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    Question

    Does anybody have any suggestions. Please let me know.
    Thanks in Advance.

  7. #7
    cadi is offline New Member
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    Default I have the same problem

    Hi!
    I have the same problem. The POP3 server worked perfectly for about 5-6 month. For some reasons I decided to change POP3 SSL port from 7995 to 110 so that remote clients can access the server with an email client to retrieve their emails (some ISP restrict outboud unusual ports like 7995). After I did that everything worked fine for about 2 days and then I started to notice that from time to time many email clients (Outlook express, MS Outlook 2003, Thunderbird, MS Outlook2007) can not retrieve mails anymore. They are saying Connected to mail.domain.com and that's all... after a few moments it went out with time out error.
    The only way I know how to fix that is by restarting zimbra.
    I have rolled-back the configuration changes and know pop3ssl is listening on 7995 as before the problem (the client are still coming on 110 and the firewall make the port forwarding / nat); however this din not solve the problem. Telnet is always successful in connecting to the pop3 server on 110 or 7995 and so are, apparently the clients but they cannot retrieve emails. The only error I could find somehow connected to this problem is:

    2008-03-14 17:34:59,205 INFO [Pop3Server-34] [] pop - connected
    2008-03-14 17:34:59,945 INFO [Pop3Server-34] [] ProtocolHandler - Exception occurred while handling connection
    javax.net.ssl.SSLException: Unsupported record version Unknown-22.3
    at com.sun.net.ssl.internal.ssl.InputRecord.readV3Rec ord(InputRecord.java:375)
    at com.sun.net.ssl.internal.ssl.InputRecord.read(Inpu tRecord.java:360)
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRec ord(SSLSocketImpl.java:723)
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.perform InitialHandshake(SSLSocketImpl.java:1030)
    at com.sun.net.ssl.internal.ssl.SSLSocketImpl.writeRe cord(SSLSocketImpl.java:622)
    at com.sun.net.ssl.internal.ssl.AppOutputStream.write (AppOutputStream.java:59)
    at java.io.BufferedOutputStream.flushBuffer(BufferedO utputStream.java:65)
    at java.io.BufferedOutputStream.flush(BufferedOutputS tream.java:123)
    at com.zimbra.cs.pop3.Pop3Handler.sendLine(Pop3Handle r.java:382)
    at com.zimbra.cs.pop3.Pop3Handler.sendResponse(Pop3Ha ndler.java:371)
    at com.zimbra.cs.pop3.Pop3Handler.sendOK(Pop3Handler. java:354)
    at com.zimbra.cs.pop3.Pop3Handler.setupConnection(Pop 3Handler.java:115)
    at com.zimbra.cs.tcpserver.ProtocolHandler.run(Protoc olHandler.java:196)
    at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Wo rker.run(Unknown Source)
    at java.lang.Thread.run(Thread.java:595)

    2008-03-14 17:34:59,945 INFO [Pop3Server-34] [] ProtocolHandler - Handler exiting normally

    Can anybody help?

    Thanks,

  8. #8
    @ndres's Avatar
    @ndres is offline Member
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    Unhappy Same Problem!!!

    I have the same problem...

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