Mailing List SIMS@mail.stalker.com Message #6670
From: Brian McEwen <brian@bmcewen.cvm.okstate.edu>
Subject: Re: POP3 Status command- read vs unread?
Date: Fri, 11 Aug 2000 19:21:46 -0500
To: SIMS Discussions <SIMS@mail.stalker.com>

Thanks very much; I'll fiddle around and then post results to the author of
the mail client, once I figure out what sendmail is doing that SIMS isn't
(or vice versa).

Thanks again!

Brian

>> I've not seen anything that indicates SIMS does work with UIDL header info
>> yet...does it?
>
>Yes, SIMS fully supports the POP3 standard.  I use it constantly.  Certainly
>if you use Eudora, any moderately recent Microsoft Client, or any of the
>Palm versions I mentioned, you'll see it in action.
>
>On any client I've used, when checking and leaving messages in an inbox with
>a good number of them in there, the client announces or otherwise makes
>visible that it's checking the unique id's (certainly eudora).
>
>Anyway if you want to prove it to yourself,
>telnet into sims and check the commands that it supports
>
>telnet <server IP> 110
>USER <accountname>
>PASS <password>
>HELP
>
>OR TYPE UIDL to view the ID's for each message.
>
>You can see http://www.ping.de/sites/maxwell/links/RFC/rfc1939.html for the
>POP3 specs including UIDL.
>
>There's no mention of it using an X-UIDL header however, and certainly SIMS
>places no such header in mail, it's up to the client to keep a local list of
>the UI's
>
>It's actually quite difficult to dig up info on servers which insert an
>X-UIDL header because there's about a million links saying (perhaps
>misguidedly), "if your server get's mail with an X-UIDL header, junk it,
>it's likely spam"
>
>A quote from one of the millions:
>http://www.luyer.net/Security/SecuringYourNetwork.html
>
>"If you go for either of these last two methods, I strongly recommend
>blocking all messages with a X-UIDL or X-PMFLAGS header, and considering
>blocking all with an X-Advertisement. The first two of these headers (X-UIDL
>and X-PMFLAGS) are widely used by "spammers" to attempt to confuse mail
>reading software to make their message be seen over and over again by the
>one client. "
>
>
>
>Craig Bowers
>
>
>> I need to check and see what exactly the client expects, it works
>> just fine
>> with the sendmail on my linux box, but downloads everything over and over
>> again when working with SIMS.
>>
>> I'm very confident that it (client) uses the X-UIDL header, as messages
>> that it has not retrieved do not have such a header, while ones
>> that it has
>> grabbed, do (at least on the sendmail box- I've not checked the
>> messages on
>> SIMS yet.  that happens sometime this evening).  I should hear from the
>> author sometime soon also.
>>
>> Thanks for the reply, and for any further info!
>
>
>#############################################################
>This message is sent to you because you are subscribed to
>  the mailing list <SIMS@mail.stalker.com>.
>To unsubscribe, E-mail to: <SIMS-off@mail.stalker.com>
>To switch to the DIGEST mode, E-mail to <SIMS-digest@mail.stalker.com>
>To switch to the INDEX mode, E-mail to <SIMS-index@mail.stalker.com>
>Send administrative queries to  <SIMS-request@mail.stalker.com>



Subscribe (FEED) Subscribe (DIGEST) Subscribe (INDEX) Unsubscribe Mail to Listmaster