I am having my emails that I send blocked as suspicious domain and that I am using a company domain. I have not got a clue what this is about. I do not understand how to rectify this and cannot get response on phone.
Delivery to the following recipients failed permanently:
Reason: This is the mail system at host know-smtprelay-2-imp.
Your message have been determined to be suspicious due to non-compliance with the SPF or DMARC policy for the domain me.com, which this message appears to have originated from.
I hope this helps. I have have had to open an outlook account to enable me to send emails to anyone with a hotmail/outlook account. Immediately got some Malware on my computer so I am unhappy with outlook.
Thank you. I have always sent emails through virgin and never had any trouble before this week and I have been with virgin for at least 18 years and I have always worked from Macs. So the whole thing is a total mystery.
SPF - Did the mail originate from an IP address permitted to send emails for the domain icloud.com - In this case yes. DKIM - was the mail signed with a valid signature. Yes and did the body hash of the email verify to show the mail has not been altered. Again Yes DMARC - uses the results of the SPF and DKIM checks PROVIDED the domains used in each match the domain in the From: address, and one or other of the two checks pass then we get a DMARC pass.
But what would happen if you sent mail for me.com via Virgin Media's servers. I'm going to make up some results based on my knowledge of what goes on behind the scenes and I'll pick one of VM's servers.
dkim=neutral no signature (because Virgin will only sign their own domains - quite rightly so too)
dmarc=fail header.from=icloud.com (p=quarantine sp=quarantine dis=fail);
Actually the SPF soft fail might produce a neutral DMARC result but otherwise the mail would end up in the spam folder because of the DMARC record.
So in that case the SPF fails because the IP address 126.96.36.199 is not approved to send mail for icoud.com There's no DKIM signature so there's no proof that the mail is genuine or that it hasn't been altered in transit. DMARC fails because the SPF check fails.
More and more domains are adding DMARC and SPF records as time goes by - so my strongest advice to everyone is MAKE SURE ALL YOUR EMAIL SETTINGS ARE UP TO DATE.
Don't assume that just because they work now they will carry one working forever. There's a good chance that if you are not using the recommended settings for each email domain, that they may stop working in the near future.
I should stress that the above advice applies to everyone, not just Virgin Media customers.
As a Very Insightful Person, I'm here to share my knowledge. I don't work for Virgin Media.