I think that emails with attachments exceeding a certain size are blocked.

You might want to upload your attachments somewhere else, and simply link
to them in your emails sent to this list.

--
Kaushal Modi

On Wed, Dec 19, 2018, 9:40 AM Emmanuel Charpentier <
emanuel.charpentier@gmail.com wrote:

> Dear list,
>
> I have made five attempts in three days to post a question to this list.
> Three of them may have failed due to the use of an SMTP server flagged on
> one site as possible spam source. The other two has been sent via gmai. So
> far, none of these message have appeared on the list, and I received no
> error message.
>
> I know tha *some* attachments are accepted (a previous question of mine
> included .tex, .pdf and .org files). However, I waonder if my mails may
> have been blocked by .docx and .odt attachments.
>
> Could you let me know if some attachments are blocked by the list manager
> or mail server ?
>
> Tkanks in advance,
>
> --
> Emmanuel Charpentier
>
>