Knowledgebase: Email
Email Spoofing
Posted by - NA - on 13 January 2011 09:41 PM
Email spoofing is the practice of changing your name in email so that it looks like the email came from somewhere or someone else.

Spoofing is generally used by spammers as a first defense against people finding out who they are. It's also used by general malcontents to practice mischievous and malicious behavior.

You'll know if your email has been spoofed by the sudden increase of "bounced" emails arriving back in your inbox (bounced messages get returned to the "sender address"). Being spoofed does NOT mean your account has been compromised or used in any way by spammers - a look at the "email hedaers" will reveal that these emails were sent via another server, not ours.

Due to the reported worldwide increase of email spoofing, customers are advised to disable their "catchall" (default) email address, so that emails spoofed from anything@yourdomain.com are NOT bounced back to you. On the Linux servers, you should set your default address to :fail: (include the colons). We would also reccommend disabling any "auto-responders" that you have setup, as these can add to the problems if sent to any received "bounces". Taking this action will minimise the issues caused if and when a spammers spoofs your email.

For more info on this, search Google for "Email Spoofing" and "Joe Job".

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