>Imail, IIRC, will wait up to 1000 seconds for an SMTP connection to
>timeout. BAD MOVE, wasting those 60 SMTP slots on effectively dead
>sessions. I use 30 or 60 seconds. The avg IMGate SMTP session is under 10
>seconds, often as low as 6 seconds.
We seem to have seen something similar to this during dictionary attacks.
Basically we're seeing connections held open for as much as an hour.
Is there any way in IMail to limit the time for an open connection?
Darin.
----- Original Message -----
From: "Sanford Whiteman" <[EMAIL PROTECTED]>
To: "Len Conrad" <[EMAIL PROTECTED]>
Sent: Thursday, December 02, 2004 4:49 PM
Subject: Re[3]: [IMail Forum] DEAD SMTP?
> I also assumed that, with that kind of investment in time and money
> and aggro trying to scale to that msg volume, and as a follower of
> this list, the admin is not an idiot (or he wouldn't gotten even
> that far) and would have configged and tuned and best-practiced as
> much as he can, worked with MS, Imail, Declude, whomever to the max,
> over weeks or months, and still couldn't get Imail to scale.
It's wishful thinking to assume that a system presented in such
general terms ("have an array") and which _cannot be defragged_ has
been sized and configured correctly as a mailbox server. If the system
has undergone mailserver-specific and site-specific optimization, the
specific configuration should be easily made available to those you
are consulting for support.
Please don't try telling me you've never seen a mailbox server which,
though adequately protected against inbound SMTP abuse via MX offload,
is undersized for outbound SMTP, POP3, and IWEBMSG. At clients'
request, I have resized, for example, servers originally hosting
500,000+ POP3/SMTP accounts off a single RAID 5 x 5 array. Postfix was
the entry point for inbound mail both before and after this
much-needed upgrade.
I know you rarely touch IMail servers, but I'd hope you admit this
situation is prevalent.
> We wiped windows/imail/declude from his MX boxes 2 months ago, I
> installed IMgate, and his nightmare was over.
Your anti-IMail, anti-Declude stance is old news to me. You don't need
to plug it on responses to my posts.
--Sandy
------------------------------------
Sanford Whiteman, Chief Technologist
Broadleaf Systems, a division of
Cypress Integrated Systems, Inc.
e-mail: [EMAIL PROTECTED]
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http://www.mailmage.com/products/software/freeutils/SPAMC32/download/release/
Defuse Dictionary Attacks: Turn Exchange or IMail mailboxes into IMail
Aliases!
http://www.mailmage.com/products/software/freeutils/exchange2aliases/download/release/
http://www.mailmage.com/products/software/freeutils/ldap2aliases/download/release/
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