Hello, Plateform : openSuSE 13.1 Thunderbird : 31.1.0 When I use a name or alias of a mailing list from my address book I get an error message by clicking on Send button : CSCA <"ConseilSyndical"> n'est pas une adresse valide car elle n'est pas de la forme utilisateur@domaine. Veuillez la corriger avant d'envoyer le courrier. That's to say that CSCA is not a valid address because not like user@dmoain. I've created these lists in a previous version of Thunderbird and it was always operational. I've done a google search and verified that name/alias and addresses do not contain special characters. The name/alias do not contain blanks. The lists don't end with an empty address. What should I do to make it operational like it was before v30 ? Thanks