Lunick, on 04 June 2016 - 09:27 PM, said:
Funnily enough, prior to that announcement my Hotmail account was fine receiving emails from Duke4 but I haven't received one since, even for PMs.
Yeah, I figure Duke4.net must have forgot to create a PTR record for their mail server in the DNS server zone file.
Their mail server is using the wrong SMTP Banner as it doesn't match their PTR record. This should be a relatively quick fix. Once the change is made restart the SMTP server service for changes to take effect.
(THIS WAS FIXED)
They should also be adding a TXT record for SPF in the DNS as well.
Here is what the SPF record should look like: Host Value: @ IN TXT "v=spf1 include:_spf.google.com ~all"
You can make your TTL like 500 so it updates sooner. However some DNS Servers prevent lowering this value too low. This SPF change is done not on the E-mail server side, it is done in the Name Server DNS for Duke4.net. In your case: afraid.org
*** UPDATED ***
Okay here is another problem. This could be very well why e-mail's are not being accepted at Microsoft. Duke4.net is blacklisted by BARRACUDA. As shown here: http://www.barracuda...22.214.171.124
Follow this link to delist yourself. http://barracudacent...emoval-request.
I've taken it upon myself to request that your e-mail server be delisted but since i'm not in control of the domain I have my doubts they will take me seriously.
Once these steps are taken there should not be a problem sending to Microsoft Servers at all.