Could not send message - Please check the recipients are correctly formatte

[britsenigma]

Could not send message - Please check the recipients are correctly formatted and contact the System Admin

It has nothing to do with the formating, if you don't add attachments, it all works fine. Googling it shows results from other Control Panel providers, possbily to do with tmp permissions?

I'm getting this from Atmail when adding attachments, I'm trying a reinstall currently.

Any ideas.

[britsenigma]

Anyone else getting this issue with atmail?