11-24-2006 09:17 AM
Does Ironport able to reject domain with invalid MX record? (or is it already on the feature list?)
Such as:
# host -t mx yahool.com
yahool.com mail is handled by 0 .
# host -t mx san-ying.com
san-ying.com mail is handled by 10 218.4.48.181.
# host -t mx guitarra.biz
guitarra.biz mail is handled by 0 64.202.167.73.
MTA that already implement this is Exim.
See: http://exim.org/exim-html-4.63/doc/html/spec_html/ch17.html
TIA
11-24-2006 06:00 PM
What we usually do in HAT is to turn the "envelope sender DNS verification" on.
Ironport will try to determinate if the domain exists. And ironport will do it through dns queries at the domain in the sender.
11-24-2006 07:55 PM
What we usually do in HAT is to turn the "envelope sender DNS verification" on.
Ironport will try to determinate if the domain exists. And ironport will do it through dns queries at the domain in the sender.
11-27-2006 01:51 PM
You could use a filter to check the bogusmx.rfc-ignorant.org zone and bounce the message if the envelope sender matches.
See http://www.rfc-ignorant.org for more info.
11-30-2006 12:25 AM
You could use a filter to check the bogusmx.rfc-ignorant.org zone and bounce the message if the envelope sender matches.
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