The age-old maxim still stands strong…
Be generous in what you accept,
Be strict in what you generate.
Perhaps Sergey might consider only applying the "verify = header_syntax" to
messages generated by their own systems, rather than deciding to apply it
to messages from the rest of the Internet.
Cheers,
Mike B-)
On 18 November 2015 at 12:49, Graeme Fowler <graeme@???> wrote:
> verify = header_syntax will cause the error message (and rejection) you're
> seeing.
>
> This isn't a flaw of that mailing list; it's a flaw of the message
> originator's MUA - it isn't adhering to the RFCs as the name part there
> should be quoted, as Mike states. The intervening MTAs simply aren't being
> as strict as you, passing as they are the original message unedited (which
> is what they're supposed to do).
>
> I'd review your logs over whatever period you have available and see how
> many emails are being rejected as a result. If it's only one sender, and
> only one mailing list, you could consider removing that check in your DATA
> ACL.
>
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