Thanks everyone for clarifying the problem. I will forward the suggestions that you guys give to the company.
Brad Knowles wrote:
At 10:28 PM +0100 2004-06-14, Ian A B Eiloart wrote:
Note that the misconfigured server is the one issuing the 550 error. Your list server is working the way mailing lists are supposed to work. The email really IS from the person that it says its from.
Ask the company to fix this. Otherwise their staff won't be able to get copies of their own (or each others) posts from most lists.
Indeed. I suspect that the company may have implemented SPF (see <http://bradknowles.typepad.com/>).
In this case, one easy solution would be for the company to designate the mailing list server as one of the systems that is officially allowed to generate e-mail that claims to be from the company.
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