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Customers of broadband ISP TalkTalk Business (TTB) are once again able to use the provider’s email service after a protracted service outage, which lasted nearly a full week and appears as if it was caused by a misconfiguration of their Domain Name System / Servers (DNS).
The outage, which started on Wednesday of last week (9th April 2025), didn’t seem to get fully resolved until the start of this week. According to feedback shared via The Register, TTB initially blamed the problem on an unspecified “global outage“, before later admitting to the ironically named ‘Very Good Email Company‘ (TTB customers) that they had “made a mistake in changing the settings for a number of Domains that they host“.
One of TTB’s customers suggested that the problem appears to have been caused after the provider’s name servers were changed to Cloudflare, with no configured DNS records and no ability for users to change those records themselves. But misconfigurations of that sort are normally resolved within hours, rather than days, which leads us to suspect that there may be a little more to it.
We did request a comment from TTB before publishing, but unusually they declined to provide one. The ISP itself remains under strain following the recent demerger and financial challenges (here).