[exim-dev] [Bug 2312] New: Email From: <> refused delivery

https://bugs.exim.org/show_bug.cgi?id=2312

            Bug ID: 2312
           Summary: Email From: <> refused delivery
           Product: Exim
           Version: 4.91
          Hardware: x86
                OS: Linux
            Status: NEW
          Severity: bug
          Priority: medium
         Component: Delivery in general
          Assignee: nigel@???
          Reporter: liam@???
                CC: exim-dev@???

When I attempt to fetch email using fetchmail with the following header:
From: <>
I get this message from fetchmail:
fetchmail: SMTP error: 550 header syntax
fetchmail: SMTP listener refused delivery

I take this to mean that Exim refused delivery.

"<>" is a valid email address according to RFC 3834, section 3.3.

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