Yahoo Email not receiving my messages?

A friend of mine is not receiving my email messages.
They're not even showing up in the spam folder.
I'm typing the correct address.
brothertruffle880Asked:
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mankowitzCommented:
possible explanations
1. Message is invalid (too big, looks like spam, contains malicious content, comes from invalid smtp server or suspected compromised smtp server)
2. The user has deliberately blocked you, or mailbox is full
3. the message is enroute, but takes such a long time to get there that it appears to have stalled.

Most of the time, youll get a message within 4 hours if delivery is delayed or impossible. Check your own spam folder for notifications like this.

Try sending him email from another account.
skijCommented:
You may wish to open your own Yahoo email account and see if you are receiving your own messages.

You may also consider getting a report from Dyn's free email test service to identify specific issues:
http://dyn.com/free-email-test/

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brothertruffle880Author Commented:
Dyn was very helpful.  Never knew about this service.
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