Re: draft-freed-smtp-limits

John C Klensin <[email protected]> Fri, 04 Aug 2023 16:48:42 -0400
Newsgroups gmane.ietf.smtp
Message-ID <63EBB19B3823FADBE6671A65@PSB>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