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From "Jason Warner" <>
Subject Re: SSL Socket connection for POP3
Date Tue, 28 Nov 2006 14:24:24 GMT
That's what I was looking for.  Thanks, Rick.


On 11/28/06, Rick McGuire <> wrote:
> Jason Warner wrote:
> > I've been working on implementing the option to use an ssl connection
> > when establishing a socket for pop3.  I'm having an issue finding a
> > way to determine whether to use the ssl connection or not.  For the
> > SMTPTransport, this is done when the object is instantiated by passing
> > in a boolean value for this.  Is there an easier way to this for the
> > POP3Store rather than tracking down all instances of it and specifying
> > the same boolean value?
> I'm not totally certain I understand your question, so let me just
> explain how that boolean is used with the SMTPTransport class and then
> point you to how Sun does SSL enablement of POP3 in their
> implementation, which appears to be very similar to what has been done
> for SMTPTransport.
> There are actually 2 SMTP transport classes that can be configured and
> used:  SMTPTransport and SMTPSTransport.  SMTPSTransport is a subclass
> of the first, and just specifies "true" for the useSSL argument of the
> constructor.  It also uses a different default port an protocol name
> ("smtps").  Note that superclass constructor is protected, so only
> available to the subclasses.  That superclass constructor is the only
> difference between the SMTPTransport and the SMTPSTransport class.  So
> the chose of using a secure connection is determined by which transport
> is requested in the application code, not by passing in a boolean.  The
> underlying  SMTPTransport  implements  the SSL support, but it is only
> enabled when the SMTPSTransport is used.
> Sun appears to do something very similar with POP3.  There provider set
> includes a POP3Store and a POP3SSLStore.  Here's the javadoc for the
> POP3SSLStore:
> Since it only appears to have added the single constructor, I'm guessing
> this is very similar to how the SMTPTransport stuff was handled.  The
> store provider name that maps to the POP3SS:LStore class is "pop3s".
> The default port appears to be 995.
> Rick
> >
> > -Jason

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