Avast 'Infection Blocked'

[Lotan]

i thought you had to actually open an email to get an infection?

[essexboy]

No as some e-mails are set to allow a receipt message

This is from live mail, yahoo will have something similar

[REDACTED]

i thought you had to actually open an email to get an infection?

So did I until yesterday! 

Essexboy: I've removed Java and installed the programs you recommended. Thus far, no more warnings today when I enter the spam folder, but I've not received any new spam as yet. I'll report back if anything untoward occurs.

Did you find out why flv player was deleted?

Thanks again.

[Lotan]

No as some e-mails are set to allow a receipt message

This is from live mail, yahoo will have something similar

oh is this only about mail apps and programs? also if it is on web based mail how do i turn it off for yahoo?
edit:
just looked in the yahoo help section and found this out
"Yahoo Mail does not provide a "read/return receipt" feature."
https://help.yahoo.com/kb/SLN3386.html

[essexboy]

Yahoo Mail does not provide a "read/return receipt" feature.

But the mail client was used to send it probably had that..  It does not appear that Yahoo blocks outgoing receipts

If you're receiving "read/return receipts" in your Yahoo Mail account, they may be originating from:
•A mobile device
•An external email client
•The recipient's Internet Service Provider (ISP)

[essexboy]

It is not an infection as such it is just that the spam is flagging your address as a live account when it sends the receipt message