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Monthly Archives: October 2019

False 550 responses from Verizon

This week there was a reported uptick in user unknown responses for verizon email addresses. The specific response folks were seeing was: 554 delivery error: dd xx@verizon.net is no longer valid. [-20] -mta4047.aol.mail.bf1.yahoo.com This appears to be a problem with their require-recipient-valid-since header checking. They are aware and are working on a fix. What this […]

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Conferences and Pac Man

On the emailgeeks slack channel someone asked for advice about going to conferences. There were lots of great suggestions. I threw in the Pac Man Rule and realised a lot of folks haven’t heard of it before. Eric Holscher created the Pac Man rule. The rule is really simple. If you’re standing in a group […]

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