Loosed e-mail

I received two messages from Avast regarding two messages my daughter that i never received
Avast message:
[avast! heuristique - AVERTISSEMENT]
Séquence d’espaces suspecte

Expéditeur : Veronique P… veronique.p.........@orange.fr
Destinataire : philippe poulette ppoulette@free.fr
Sujet : tr: RE :Re: RE :re: RE :Re: RE :Votre annonce “Location maison avecpiscine” sur Leboncoin.fr

Where can I found more information;
these messages are important ; I need it

Thanks in advance
Best regards

avast! Mail heuristic have detected a suspect blank space sequence in the name of the attached file (most probably to hide the real extension of its name).
Most probably the messages are lost.

Hi PHI-00338,

Make that mail address not readable to harvesters, like as pp*uletteATfree dot fr
You do not want to receive all that spam mail, “n’est pas?”. Remind the sender of the hick-up and ask the mail to be re-send,
without the flagged issue. Or you can contact your provider (for some reasons containment policy is not that bad, not bad at all),

polonus