Re: POP3 Timeouts?

From: Ken Murchison (no email)
Date: Thu Mar 15 2007 - 14:21:21 EDT

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    Blake Hudson wrote:
    > I am having a problem where long POP transactions are being closed by
    > the server.
    >
    > I turned on per-user debugging, but didn't actually see the problem
    > until I ran a packet sniffer(wireshark) on the server.
    >
    > The transaction goes as follows:
    > 1) Client connects/auths
    > 2) Client lists mailbox contents and retrieves messages in order
    > 3) Client requests a large message, server send the message
    > 4) Client issues the dele command, server issues a TCP RST (client
    > obliges with a Fin,Ack effectively closing the connection)
    >
    >
    > No errors are present in the log and the per user debugging makes it
    > look as though the client never issued a dele/quit.
    >
    > This appears to be the POP timeout as increasing the timeout allowed the
    > download of larger messages. Is this the way the POP timeout is supposed
    > to work? I would assume as long as data is continuously being requested
    > by the client the timeout would not be counting. Is the timeout counter
    > instead based on the time between commands issued by the client?. I am
    > using Cyrus 2.3.1

    This problem was fixed in 2.3.2.

    -- 
    Kenneth Murchison
    Systems Programmer
    Project Cyrus Developer/Maintainer
    Carnegie Mellon University
    ----
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