This has been an ongoing issue which is all over the internet.
We have ongoing issues with Microsoft junk filtering. A few weeks ago we had lengthly and difficult discussions with their deliverability support, which is very robotic with default replies as many of you may have experienced.
We managed to get our ip's mitigated and all the issues went away, all emails went to the inbox. Now after only a few weeks they are junking it all again and I"m getting complaints from angry users who say I should sort the email system and it's affecting their business.
I've tried explaining that it's Microsoft!
A few points:
- We are signed up for al their programs
- We have all reverse DNS, SPF etc in place
- Cpanel shows ok for deliverability for all domains
- We are on no blacklists and have a 100 senderscore
- We filter outgoing email with spam assassin and do not allow bulk email etc
After pushing Microsoft this time we just get:
"Your IP (******) was blocked by Outlook.com
because Hotmail customers have reported email from this IP as unwanted. One possible explanation for this is the automatic forwarding of unfiltered inbound messages, including unwanted messages, to Outlook.com/MSN
Please confirm that your emails comply with Hotmail's technical standards. This information can be found at Outlook.com Postmaster
After challenging them
"As previously stated, your IP(s) do not qualify for mitigation at this time. I do apologize, but I am unable to provide any details about this situation since we do not have the liberty to discuss the nature of the block.
At this point, I would suggest that you review and comply with Outlook.com
's technical standards. This information can be found at Outlook.com Postmaster
We regret that we are unable to provide any additional information or assistance at this time. "
The headers which cause this are
Last time they could not justify why even a blank email was junked.
What more can we do? We have confirmed that we have had no junk mails through their reporting scheme which were marked.
They are basically just saying, bugger off, we don't care, we just want everyone to join 365 and pay us.
Has anyone managed to get any further than this? It seems we were just lucky last time getting mitigated but it only lasted a short time.
We even got new customers moving to us because they had this issue elsewhere with many hosts, now we have it again!
Customers will not accept that this is a Microsoft issue, we can't resolve something where we don't know the issue.
Thanks for any advice!