Greylisting. HOWTO - Define an SPF Record. This page defines configuration of a Sender Policy Framework (SPF) record for a domain and its mail servers. DKIM/ADSP is an alternative or complimentary approach involving the signing of mail to authenticate the sender domain. DKIM is significantly more complex than SPF but provides significantly more functionality. Finally, the DMARC RR provides a method by which a domain can advise the mail receiver whether mail originating from a domain will have DKIM, SPF or both, what to do with mail that fails either DKIM or SPF checks and whether it wishes failure reports. <grovelling apology> The macro feature of SPF was incorrectly documented using parenthesis, these should have been braces ({}). </grovelling apology> SPF Introduction and Overview SPF was initiated by Meng Weng Wong of pobox.com to enable validation of legitimate sources of email for a domain and is an IETF standard (RFC 7208).
The SPF information must be defined using a standard TXT resource record (RR). v=spf1 [[pre] type ] ... Report Phishing Sites. US-CERT collects phishing email messages and website locations so that we can help people avoid becoming victims of phishing scams. You can report phishing to us by sending email to phishing-report@us-cert.gov. What Is Phishing? Phishing is an attempt by an individual or group to solicit personal information from unsuspecting users by employing social engineering techniques. Phishing emails are crafted to appear as if they have been sent from a legitimate organization or known individual. These emails often attempt to entice users to click on a link that will take the user to a fraudulent website that appears legitimate.
Learn More About Phishing The following documents and websites can help you learn more about phishing and how to protect yourself against phishing attacks: Methods of Reporting Phishing Email to US-CERT In Outlook Express, you can create a new message and drag and drop the phishing email into the new message. Wordpress Anti-Spam Plugin. Postfix, Postgrey, RBL, Amavisd-new, ClamAV & SpamAssassin: protéger le potager des assauts carnés répétés, ou mise en place d'un système antispam - poivron.org - passé/futur.