Nico, do you have permission/authorization to connect this RC server to
the campus Exchange server? You are posting here with a gmail address
instead of your university address. This leads me to believe you are
not acting in an official capacity.
Furthermore, if you are not a member of the university IT staff, it is
possible that network layer (router/qos) roadblocks are the reason for
the abysmal performance, and you will never know this. If _we_ are to
help you make this RC server function properly, we require accurate
answers to our questions. If you cannot provide that accurate
information, we won't be able to fully help you.
Keep in mind none of us wants to assist a rogue student in doing
something against university policy or without proper permission.
Hacking is a personal endeavor, not one that should involve IT
professionals around the world who are spending their valuable time
assisting you in something that may very well be illegal in your
jurisdiction.
Are you authorized to be doing this? If so, get the information on the
Exchange server, and interface with its admin staff to optimize your RC
performance.
--
Stan
Nico Schlömer put forth on 9/14/2010 2:05 PM:
> PING imap.ua.ac.be (143.169.245.58): 56 data bytes
> 64 bytes from 143.169.245.58: icmp_seq=1 ttl=124 time=2.053 ms
> traceroute to imap.ua.ac.be (143.169.245.58), 64 hops max, 52 byte packets
> 1 pcfw1 (143.129.75.14) 0.655 ms 0.695 ms 0.472 ms
> 4 143.169.251.100 (143.169.251.100) 1.725 ms 1.471 ms 1.217 ms
Both machines are on the same friggin campus network Nico. I'm very
glad now I asked these questions. I'm probably not the only one who
thought this RC server was fairly remote to the IMAP server...
>> 2. Do you have imapproxy installed on the RC server?
> Never heard of that.
See my other post.
>> 3. What web server are you using?
>> 4. What version of PHP?
>> 5. What version of FreeBSD?
>
>
http://win.ua.ac.be/~nschloe/other/phpinfo.php
All good.
>> 6. What are the hardware specs (CPU speed/mem size) of both the RC
>> server and the IMAP server?
>
> RC server:
> * 4 cores,
> CPU: Intel(R) Xeon(R) CPU E5405 @ 2.00GHz (1999.78-MHz
> K8-class CPU)
> * 8 GB mem
No apparent problems here.
> I'd like to benchmark PHP applications in general, or have some sort
> of general web application benchmark anyway. Suggestions?
None from me. Your PHP implementation isn't the problem here.
> I have no idea about the hardware specs of the IMAP server.
Too bad the Exchange server IMAP string below doesn't tell us. ;)
>> 7. What IMAP server daemon/version is running on the IMAP server?
> It must be one of those Microsoft Server installations -- no idea what
> version though. Remote benchmark possible?
Now that I have the server IP, I can answer my own question. Look at
the very last line below. It's the Exchange 2003 IMAP connector. So
you were indeed correct about the IMAP server being Microsoft. FWIW,
the connection establishment time from Missouri, USA is instantaneous,
even though the latency is in the 150-200ms range.
[03:27:35][stan@greer]~$ openssl s_client -connect 143.169.245.58:993
CONNECTED(00000003)
depth=1 /C=BE/O=Cybertrust/OU=Educational CA/CN=Cybertrust Educational CA
<snip><snip><snip>
0 s:/C=BE/ST=Antwerp/L=Antwerp/O=Universiteit
Antwerpen/OU=ICT/CN=webmail.ua.ac.be
<snip><snip><snip>
---
* OK Microsoft Exchange Server 2003 IMAP4rev1 server version 6.5.7638.1
(xmailf3.ad.ua.ac.be) ready.
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