Numericable and Noos MXs records moved to SFR: check your (Power)MTA settings

  In 2014, French ISPs Numericable and SFR merged to become the Altice France group. Numericable was itself the result of a merger between NC Numericable and Noos in 2007.   Up to now, mailboxes at these ISPs were managed independently using different MXs and anti-spam protection. Noos and Numericable domains on one end and SFR […]

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Categories: Authentication, Deliverability, General, Postfix, PowerMTA, Providers

ISP information: Orange.fr

Postmastery assists various senders every day with delivery monitoring tools and consultancy services. In order to assist the global email senders community, we are happy to share some ISP specific information we collected over the last few years. This blog post looks at some more details, this time related to Orange.fr. Orange: the biggest French ESP […]

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Categories: Authentication, General, Providers

Delivery issues at LaPoste.net resolved

On Friday April 6, 2018, Postmastery’s Email Delivery Analytics detected serious delivery issues at LaPoste.net. The most frequent SMTP errors we detected were: 421 4.3.2 No system resources 421 4.3.2 All server ports are busy 451 4.7.1 Service unavailable – try again later 421 4.7.0 lpn-prd-vrin0xx Error: too many errors 421 4.4.2 lpn-prd-vrin0xx Error: timeout […]

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Categories: Deliverability, Providers