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We appear to have an issue where even though I have put our company accountant's domain name on the Trusted Senders list, their email to us is still bouncing so was wondering if anyone might be able to advise what might be going wrong. When I look in the logs it states they are being rejected due to an SPF Fail, yet when I look up their domain (hwca.com) using MxTools, that reports that their SPF passes so I am puzzled why their email is not bypassing the Smartermail spam checks.
We are using a combination of Bruce Barnes' suggested settings for antispam (the latest ones he has kindly provided) and also MessageSniffer but no matter what I try I cannot seem to get this domain to be accepted by our mail server.
If anyone has any ideas / suggestions I would be grateful as these emails are important to us being as they are from our accountants!