I use the same email client - Apple Mail 2.3.1 running on OSX 10.4.11 (though I use Postfix, not Sendmail), so I checked my logs for you.

Client "book" connects to host "Arthur" using SSL on port 993.

I see the following entry:
Apr 27 21:12:41 Arthur imapd[1507]: imaps SSL service init from 192.168.178.29 Apr 27 21:12:42 Arthur imapd[1507]: Command stream end of file, while reading line user=??? host=book [192.168.178.29]

Rather similar - I'm guessing the differences are down to the differences between Postfix and Sendmail.

(I believe) I get the "error" because I'm using a self-signed certificate - that I have to manually accept at login stage (only once). It seems that Apple Mail behaves this way when it's waiting for that confirmation.

Could something similar be true for you?

Simon


On 26 Apr 2008, at 01:22, Mark Crispin wrote:

On Fri, 25 Apr 2008, Ken Keating wrote:
For testing purposes we built 2007a to accept secure connections on port 994 rather than 993.

How did you do this? Did you change IMAPSSLPORT in imap4r1.c from 993 to 994 (the most straightforward way)? Or did you use some other means? If so, what?

Outlook, Thunderbird, and Mac mail on Leopard (OS X 10.5) seem to work just fine, but Mac mail version 2.1.3 on Tiger (OS X 10.4) has problems. We get error messages in our sendmail log: Apr 18 09:45:31 <hostname> simapsd[10190]: [ID 960700 mail.info] Unexpected client disconnect, while reading line user=??? host=<fqhn> [<IP addr>]

This isn't an error message. It simply means that a not-logged-in client disconnected the session without first issuing a LOGOUT command. Some clients do this routinely in the notion that this is "more efficient".

So, all we really know here is that Mail.app on Tiger did not log in, and then disconnected the session.


-- Mark --

http://staff.washington.edu/mrc
Science does not emerge from voting, party politics, or public debate.
Si vis pacem, para bellum.
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