Protect your customers with SPF
February 5, 2023
A well-designed email validation framework using DKIM, SPF, and DMARC goes a long way in protecting your customers as well as yourself....
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[Solved] NJABL Blocking Directadmin Email with Exim
January 2, 2019
Woke up this morning to directadmin blocking new email from Office 365 exchange. The following error was being reported to the sender via Non Delivery Report (NDR): 550 5.0.350 Remote server returned...
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Phishing Warning: SPF no longer adequate!
November 8, 2018
What happened? Various fraud prevention techniques to prevent almost all email spoofed phishing attempts have been in place for a while. However, twice today I received what has become a very...
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Email Fraud Prevention
November 5, 2018
Industry-wide surveys indicate that nearly 60% of organizations have noticed an up tick in fraudulent emails. Over half of the respondents are not confident of their executives ability to detect...
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Email Problems?
March 19, 2013
Ever sent a message and received in return a reply similar to this: >>> DATA<<< 550 5.7.1 SPF unauthorized mail is prohibited. 554 5.0.0 Service unavailable Likely, you placed a call to your...
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