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Tag: outlook.com

Happy 2018

This is the time of year when everyone starts posting their predictions for the coming year. Despite over a decade of blogging and close to 2500 blog posts, I have’t consistently written prediction articles here. Many years I don’t see big changes on the horizon, so there’s not a lot to comment on. Incremental changes […]

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Microsoft MXs changed over

Today on MailOp it was announced that the migration of Microsoft freemail domains to the office 365 backend. Over the next week the mx*.hotmail.com mail servers will stop working. Check your settings, folks, and make sure you’re correctly querying DNS before sending.

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October 2017: The Month in Email

October was a busy month. In addition to on boarding multiple new clients, we got new desks, I went to Toronto to see M3AAWG colleagues for a few days, and had oral surgery. Happily, we’re finally getting closer to having the full office setup.  What is an office without a Grover Cat? (he was so […]

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Troubleshooting and codes

Microsoft is still in the process of rolling out new mail servers. One thing that is new about these is some new codes on their error messages. This has led to questions and speculations as to what is going on. host outlook-com.olc.protection.outlook.com [104.47.9.33] said: 550 5.7.1 Unfortunately, messages from [10.10.01.01] weren’t sent. Please contact your […]

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Microsoft changes

There’s been quite a bit of breakage and delivery failure to various Microsoft domains this month. It started with them changing the MX for hotmail.co.uk, then the MX for hotmail.fr… and both these things seem to have broken mail. I also saw a report this morning that some of the new MXs have TLS certificates […]

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Microsoft deprecating SmartScreen filters

At the beginning of the month Microsoft announced that they were deprecating the SmartScreen filters used by the desktop Microsoft mail clients. These are the filters used in Exchange and various version of Outlook mail. This is yet further consolidation of spam filtering between the Microsoft free webmail domains, Office365 hosted domains and self hosted […]

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Ask Laura: Is the SmartScreen Filter Really Smart?

Dear Laura, Can you help me understand the Microsoft SmartScreen filter? I’m working on a new project and we’re not able to get to the inbox at Microsoft.  Our SNDS/JMRP health is great, not a problem that we can see, but when we contact the support team we’re told we’re being flagged by SmartScreen. It […]

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Getting unblocked at Outlook.com

It’s been a crazy week here at M3AAWG. I have a lot of stuff to blog about, but I think one of the really important things to get out is the new unblock request page at Outlook / Hotmail. https://sender.office.com Submit your IPs and it will be reviewed. (Apologies for the repeated bad links. I’m […]

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Office365/EOP and Outlook.com/Hotmail will converge

Terry Zink posted two informative blog posts recently, the first being the change to unauthenticated mail sent over IPv6 to EOP and the second post about EOP (Office365 and Exchange Hosting) and Outlook.com/Hotmail infrastructure converging. Exchange Online Protection (EOP) is the filtering system in place for Office 365 and hosted Exchange customers. Outlook.com/Hotmail utilized its […]

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Mythbusting deliverability and engagement

Yesterday I published an article talking about an engagement webinar hosted by the EEC and DMA. I made a couple predictions about what would be said. ISPs do monitor engagement, even if they do it differently than senders thought. Engagement is important for inbox delivery at some ISPs. Different ISPs have different ways of making […]

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