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List:       imap
Subject:    Re: [Imap-protocol] authenticate LOGIN question
From:       Gene Smith <gds () chartertn ! net>
Date:       2017-10-31 22:45:05
Message-ID: ae75defb-739d-e1e0-69d1-0a21c89efaf1 () chartertn ! net
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On 10/31/17 5:02 PM, =C1ngel wrote:
> Copying you in CC, Gene as the mailing list thinks this is spam...

Thanks.
> On 2017-10-27 at 01:23 -0400, Gene Smith wrote:
>> One that I did find that supports it, after providing the uid
>> and pwd, reports RENEGOTIATING and then openssl crashes.
> =

> You have entered in openssl a line beginning with uppercase R
> This made openssl to renegotiate the TLS connection, which many servers
> don't support.
> =

> It is quite similar to that, but openssl s_client does not provide a
> transparent tunnel for tls connections.
> This is a common pitfall when testing smtp sending with starttls, as you
> can't issue "RCPT TO:" (the good news is that the protocol is case
> insensitive, so "rcpt to:" works).
> =

> In IMAP the problematic letter will be at an identifier prefix, so the
> solution is simply to choose a different one.
> =

> s_client(1) says about this:
>>   When used interactively (which means neither -quiet nor
>>   -ign_eof have been given), the session will be renegotiated if the line
>>   begins with an R, and if the line begins with a Q or if end of file is
>>   reached, the connection will be closed down.
> =

> Best regards

Thanks for the info on openssl/s_client. I did not know about this =

behavior. You are right. The last thing I entered was the base64 encoded =

password and it begins with R. That explains that. Just to be clear, =

this is a different server that supports authenticate login and not the =

problem yahoo server.

So my question is still why yahoo (and possibly other servers that I =

haven't encountered) won't accept the uid and password (both base64 =

encoded) but claim to have authenticate login capability. This is using =

a normal client or openssl and neither uid or password, after base64 =

encoding, begin with R.

-gene
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