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sr #110856: Valid (probably) email fails to deliver to {bug-gnulib,coreutils}

Submitter:  Arsen Arsenović <arsen>
Submitted:  Sun 19 Mar 2023 10:40:14 AM UTC
Category:  Project mailing lists Priority:  5 - Normal
Severity:  3 - Normal Status:  Invalid
Assigned to:  None Operating System:  None
Open/Closed:  Closed
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Wed 18 Oct 2023 10:06:17 PM UTC, comment #2: 

Sorry this didn't get replied to sooner.

The condition failed is defined in exim's default config file

quoting from the exim spec (aka manual):
This condition is relevant only in an ACL that is run after a message has
    been received, that is, in an ACL specified by acl_smtp_data or
    acl_not_smtp. It checks the syntax of all header lines that can contain
    lists of addresses (Sender:, From:, Reply-To:, To:, Cc:, and Bcc:),
    returning true if there are no problems. Unqualified addresses (local parts
    without domains) are permitted only in locally generated messages and from
    hosts that match sender_unqualified_hosts or recipient_unqualified_hosts,
    as appropriate.

After reading that, I quickly see the problem: -email is unavailable- <>
The first @ in that address is not valid.

Ian Kelling <iank>
Site Administrator
  Spam posted by anonymous
Sun 19 Mar 2023 10:40:14 AM UTC, original submission:  


When submitting some test results, I got the following delivery fail report:

<>: host[2001:470:142:3::10] said: 550 Message
    headers fail syntax check (in reply to end of DATA command)
<>: host[2001:470:142:3::10] said: 550 Message
    headers fail syntax check (in reply to end of DATA command)

The email in question seems valid, and after removing colons from the body of the email, a delivery succeeded.

I've attached the e-mail I originally attempted to deliver.

This email is parsed correctly by both Postfix and Emacs.

We've attempted delivery from two different mail servers, and both failed.

Arsen Arsenović <arsen>


(Note: upload size limit is set to 16384 kB, after insertion of the required escape characters.)

Attach Files:

Attached Files
file #54510:  1679177351.a140adb30682832f.bstg,U=535:2,S added by arsen (2KiB - application/octet-stream)


Depends on the following items: None found

Items that depend on this one: None found


Carbon-Copy List
  • -email is unavailable- added by iank (Posted a comment)
  • -email is unavailable- added by arsen (Submitted the item)

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    Follow 3 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2023-10-18 iank StatusNone Invalid
        Open/ClosedOpen Closed
    2023-03-19 arsen Attached File- Added 1679177351.a140adb30682832f.bstg,U=535:2,S, #54510

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