>Is there a way to reject/kill e-mails which are just relayed using a blank
>character in the MAIL FROM line e.g.
>[24.54.94.169] MAIL FROM: <[EMAIL PROTECTED] >
>Because of the blank character the message is relayed, security options are
>set to "Relay for local hosts only".
>We can not change to "No mail relay" and SMTP Auth.
Well, the first thing to realize is that you are most likely offering a
free service to spammers. With the sheer volume of spam these days, fewer
and fewer people are willing to pay businesses that give out their services
to spammers for free.
However, I'm sure you have your reasons for operating this way. I believe
the "Check Valid Sender" option in the SMTP security settings will catch
E-mail addresses that have spaces in them.
-Scott
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IMail. http://www.declude.com
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