recipient’s mailbox is quarantined

[TeamKomando:John]

Hello Dusty,

When your brother sends emails with attachments, what kind of attachments are they? and are you the only recipient or is he sending these rejected emails to multiple recipients?

[Dusty]

The attachments are nearly always jpeg or pdf files.
His emails are usually to just me but sometimes he copies his son and daughter. They do received the attachments just fine.

More relevant information of which he reminded me:
If he sends the emails directly to an @yahoo.com account, I do get the attachments. It is when he sends it to an alumni forwarding account that we have this problem. Emails through @alum.pomona.edu without attachments come through, just those with attachments bounce. I wouldn’t know whether anyone else tries unsuccessfully to send attachments to .edu. IT at Pomona College worked with me on this problem and determined that the emails were going through as expected on their end, that the problem had to be with Yahoo. Of course I can’t communicate effectively with Yahoo (you’ve probably heard this before), so I turned to you. Is this a wrinkle that defies explanation?

I appreciate your trying to help!

Lois (aka Dusty)

[TeamKomando:John]

Hello Dusty,

It does look like Yahoo is trying to prevent you from receiving spam. You should not be able to see who is is CC’ing on emails. He could possibly try BCC to see if that alleviates the issue.

[Dusty]

Thanks, John, for your attention to this quarantine problem. The BCC attempt didn’t work either, so I’ll just give up on this particular issue, and my brother will send any emails with attachments to a direct Yahoo email address. I’ll hope that if any other sender has the same problem, that person will find a different way to communicate with me. As you no doubt know, there’s really no way to communicate with Yahoo anymore, especially since they have discontinued the Yahoo Answers Community function. Thanks for your support.