Attachment type is not being set because in file smtp.mail.inc on line 415 there is a typeo. You have $filetype instead of $file_type. Fixing this allowed Attachments to flow correctly to Amazon SES. Before this would provide an error from Amazon stating "Missing Start Boundary".

Files: 
CommentFileSizeAuthor
#1 smtp.1659148.1.patch636 bytestobiasb

Comments

Version:7.x-1.0-beta1» 7.x-1.x-dev
Status:Active» Needs review
Issue tags:+Novice
StatusFileSize
new636 bytes

Status:Needs review» Closed (duplicate)