OK - after a few hours sleep... I'm wondering if its uw-imap at all,
although I'm clueless what else it could be.
As I mentioned earlier, squirrelmail is working fine. It is using a
ssl/tls connection, which shows as an imaps connection spawned by
xinetd. That connection, however, is from 127.0.0.1. Thunderbird is
connection from 10.184.155.0/24 (depending on which family members
machine is trying). We also see imaps being started via xinetd for
those connection, but they timeout after 30 seconds.
This was occurring before I enabled any firewalling and yes, xinetd is
enabled for my 10. subnet (clearing, since imaps is spawning).
So... when I login from squirrelmail I see in /var/log/mail.log:
imapd[2911]: Login user=kevinc host=localhost.localdomain [127.0.0.1]
imapd[2911]: Logout user=kevinc host=localhost.localdomain [127.0.0.1]
and in /var/log/messages:
xinetd[2739]: START: imaps pid=2911 from=127.0.0.1
xinetd[2739]: EXIT: imaps status=0 pid=2911 duration=13(sec)
When I try, and fail, from Thunderbird I see in /var/log/mail.log:
imapd[2919]: Unexpected client disconnect, while reading line user=???
host=UNKNOWN
and in /var/log/messages:
xinetd[2739]: START: imaps pid=2919 from=10.184.155.208
xinetd[2739]: EXIT: imaps status=1 pid=2919 duration=30(sec)
Please share your thoughts... I'm at my wits end.
For instance: is there anyway to increase the logging level within
uw-imap to help determine whats going on?
Thanks in advance,
Kevin
On 10/3/2012 3:59 AM, Yiorgos Adamopoulos wrote:
On Wed, Oct 3, 2012 at 11:50 AM, Kevin Carpenter
<[email protected]> wrote:
Basically, its looking like its connecting but not hand shaking right.
If you tcpdump and it only does the three way hand shake and then it
waits "forever" (until timeout) then it is most likely a TCP window
scaling issue. Check your MTUs also and set it to 500 just in case.
The weirdest of this behavir has happened to me among two servers on
the same switch where everything was working except sqlplus between
them.
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