On Tue, 22 Mar 2011, jon1234 wrote:
Hey Guys,
I'm fairly new to this spamassassin lark as I've just taken a new job so
please bear with me if my question is unrelated.
In a nutshell when my exchange users try to send to certain domains they get
the following bounce message.
<afnsecurity.com #5.5.0 smtp;550 "REJECTED - Bad HELO - Host impersonating
[afnsecurity.com]">
From where do they get that bounce message? From a host internal to your
network or from hosts out on the Internet?
I do have spam assassin installed but it was setup by my predecessor. After
googling the above error it has returned mostly results regarding exim. This
has caused me to suspect that maybe spamassassin has something to do with it
as I'm just running a SBS Exchange mailserver.
SA doesn't have anything to do with that.
Any help/points in the right direction would be very appreciated.
If that's coming from an internal MTA, I'd suggest that MTA doesn't
believe your Exchange server is a legitimate source for mail from your
domain. If that's coming from external MTA(s) then others on the public
Internet apparently don't believe your public IP address is a legitimate
source for mail from your domain. Do you publish SPF information or use
Domainkeys? Has your public MTA's internet IP address changed recently?
--
John Hardin KA7OHZ http://www.impsec.org/~jhardin/
jhar...@impsec.org FALaholic #11174 pgpk -a jhar...@impsec.org
key: 0xB8732E79 -- 2D8C 34F4 6411 F507 136C AF76 D822 E6E6 B873 2E79
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