Quick questions

 

You have received message about the undelivered email that appear to originate from your email address. In addition the name of your computer or provider mentioned in such message is wrong. Don’t pay any attention on such letter, it wasn’t sent from your email address – it was sent by spammers.

 

Unfortunately it’s possible to forge the sender address. If the receiving server does not make additional checks (SPF, DKIM) it’s possible to send letter from any email address.

 

The mail server having rejected the letter can send to the sender the bounce message of non-delivery (Non-Delivery Report, NDR). Since the address of the sender is forged, the user can receive set of messages on non-delivery. Such incorrect automated sending of bounce messages by mail servers is called backscatter.

See here for more details about spam.
Some advices of how to reduce spam amount in the mailbox.

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After portal update I can't open mailbox page or don't see changes

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Folder "Lists" and "Social"

Advices of how to reduce spam amount in the mailbox

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Filter rule: ignore SPAM rules

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After mailbox status change, can not receive e-mails

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Forward a letter

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Mark letter as

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Increased spam protection.

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Filter rule: redirect and leave a copy

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Threads

Redirect email

Mailbox optimization.

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I have received an e-mail from unknown sender and when I try to reply, I get a message saying that this address doesn't exist

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Filter rule: redirect to another e-mail

Remote image blocking

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Why incoming message list don’t open from the first page by default?

The personalized letters or why my name /data are in the spam letter?

What to do if you don't want recipients to receive messages with winmail.dat attachment?

Create new folder

Why my sent e-mails go to «Lists» or «Social» folders

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