Question about Outlook Express

Windows Live does not send mail out whether its attachments or photo mail from Pictures,Photo Gallery,forwards,replys or reguler mail.that is how I found out the mail was not being sent by internet.the way I found out was when I was sending photos both ways to the same contact as he complained he did not like getting them by Sky Drive so I send him a couple batches of photos from Photo Gallery using photo mail and attachments to compare which he preferred andthats when he said he did not get them and said he had not gotten mail from me for over a week and I had sent him at least 4 emails within the last week.I then checked my Sent selection and it indicated they were sent.Also I had sent 2 to my self in my other accounts which is AOL and Embarqmail [Mozilla] and they were there.I then sent mail from both of these accounts and they were received by my contacts.So Windows Live is corrupt as I can receive mail but cannot sent out.   Jack E.