Thanks, everyone, for your feedback.
Jeff mentioned the .zip virus file, which is a lot of what it is (seen
through the returned messages). It just started today but regardless, if it
can happen at random, I worry about what will happen when someone really
tries.
Michael, I had wondered about being an open relay. However, if I choose
relay for addresses, how are my remote people going to be able to send?
I'm talking about a server that has 50 virtual domains. I know that's
probably the dumbest question asked today (or maybe longer!) but I just
don't know. This was thrown at me, as is, and I'm learning as I go.
I really do appreciate your feedback!
Todd
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]] On Behalf Of Michael Graveen
Sent: Monday, May 02, 2005 8:38 PM
To: [email protected]
Subject: Re: [IMail Forum] Spoof problem?
At 04:53 PM 5/2/2005, you wrote:
I've got an email address that I'm receiving "mail delivery failed"
messages to - the problem is that I didn't send them. It appears that
it is being used to spoof messages with virus attachments. It is a
business address, so the image is not particularly favorable. I have
not received this before today, and this is the second one (the first was a
single email address).
I'm assuming either my time has finally come, or someone is making an
effort to exploit me.
SMTP Security settings for this server are:
Mail Relay Options: relay for local users only Allow remote mail to
local groups (checked) Check valid sender (checked) Auto-deny possible
hack attempts (checked) Disable SMTP "VRFY" command (checked)
Any thoughts on what I should do? The returned message shows about 25
email addresses that were "invalid" so it is getting sent to a lot of
people.
Thanks for your help.
Todd
You should change your Mail Relay Option to either "No Mail Relay" or "Relay
mail for addresses". Right now you're an open relay!
Mike
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