Spam and Virus Filters

This section explains how we scan and filter your incoming mail to block spam and viruses. You can control some of the settings used.

Does your e-mail service screen for viruses?

All incoming e-mail for your account is checked for viruses, with virus patterns updated hourly.

What spam filters do you use?

We use a number of different filters to detect and reject spam.

Is there a “spam folder” that contains the spam I’ve received?

We don’t use a “spam folder” by default, although you can enable one if you wish.

How can a legitimate correspondent bypass the spam filter?

If the spam filter is blocking legitimate messages from one of your correspondents, you can “whitelist” the address.

How do I lower the amount of spam I receive?

You can take a number of steps to minimize the amount of spam you receive.

How do I report spam I receive?

We recommend using a free service such as SpamCop to report spam. This topic explains how to do that and describes the "full headers" needed to report spam.

Why do I receive so much spam about "Nigerian widows," investment stocks, and lotteries?

Advance fee fraud spam (often called "Nigerian widow" or "419" spam), stock scams, and lottery scams are the most difficult types of e-mail for a filter to block.

Which spam filter setting matters for forwarding addresses?

If you use a forwarding address to direct mail to a mailbox, the spam filter setting of the the forwarding address is used when mail arrives for that address, and the mailbox spam filter setting is ignored.

Why can't I lower the spam filtering level for some forwarding addresses?

If you're forwarding your mail to addresses that track spam, you won’t be able to disable our spam filtering.

What is SpamAssassin?

We use a content-based scanner called SpamAssassin to allow advanced users to create additional anti-spam mail rules.

Why did I get a message saying I sent spam?

If spammers "forge" your address in mail they send, you might receive erroneous "bounce" messages.

Why did I get a warning saying I sent a virus?

Occasionally you might receive a warning claiming you sent a virus. If this happens, the virus was almost certainly sent by someone else with an infected computer, not by you or us.

How can I filter my e-mail with Sieve server-side filters?

You can use Sieve mail filters to control how mail is delivered.