That was definitely the problem. I have improved the function and now
I do not see rejection problem.
It means servers are giving wrong information about email addresses
while the real problem is with file names.
(defun rcd-mailutils-mail-files (files)
"Return list with \"mail\" program arguments for file attachments."
(cond ((stringp files) (when (and (not (seq-empty-p files))
(file-readable-p files))
(list "--content-filename" (rcd-rfc2047-encode
(file-name-nondirectory files)) "--content-type" (rcd-mime-type files t) "-A"
files)))
((listp files) (let (list)
(while files
(let ((file (pop files)))
(when (and (not (seq-empty-p file))
(file-readable-p file))
(push file list)
(push "-A" list)
(push (rcd-mime-type file t) list)
(push "--content-type" list)
(push (rcd-rfc2047-encode
(file-name-nondirectory file)) list)
(push "--content-filename" list))))
list))))
Jean
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