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October 11, 2023

Deferrals at Microsoft

By steve
1 Min read
1 comment
11October

If you’re seeing a lot of “451 4.7.500 Server busy. Please try again later” from Office365 this morning you’re not alone. Microsoft are aware of the issue, and incident EX680695 says: Current status: We’ve identified that specific IP addresses are being unexpectedly limited by our anti-spam procedures, causing inbound external email delivery to become throttled and delayed...

November 10, 2015

ESP attacks, again. Be wary.

By steve
2 Min read
Add comment
10November

There seems to be an uptick in phishing attacks that have an impact on ESPs recently. Your CEO The most critical one is targeted spear-phishing attacks that claim to be internal documents sent by senior staff within the company, e.g. from the company CEO. It’s likely that the attached documents will compromise and backdoor your machine, and from their most of your internal network, using an...

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