Microsoft Outlook 365 email send issue

[robinh73]

Evening all, I use Microsoft Outlook 365 for my business emails and have an issue when replying to emails, in that they won't send. I can send a brand new email (have tried to my father and to my Gmail account) but when replying to a current email, I get a message to say that the email is undeliverable. I have tried from my phone and PC and get exactly the same response. Any suggestions? Cheers.

[robinh73]

Hope this helps.

[robinh73]

Does this give any clues? It is strange as it is about 4 separate email addresses.

[robinh73]

selwonk said:

Would you be comfortable posting up the domain name for your business? I suspect that this may be an SPF issue.

The business name is Howells Tree Services. Many thanks for this.

[robinh73]

Many thanks indeed for this, I really appreciate it. Fingers crossed I managed to sort it without crashing the internet or something!

[robinh73]

Actual said:

Hey, my Internet just stopped working and I have lost a whole days work (surfing PH)

Sorry about that. I didn't realise that CTRL ALT DELETE had that affect!

[robinh73]

HantsRat said:

You need to have SPF, DKIM and DMARC on your domain. Let me know if you need a hand setting this up.

I have to say I am a bit unsure as to how to do this, so any help would be very much appreciated. Many thanks.

[robinh73]

I am struggling with this still I am afraid to say. I have been on to Microsoft help and sent screenshots but no joy as yet and in the meantime I am unable to send business emails. Is someone able to help me out with this please? Many thanks in advance.

[robinh73]

Many thanks for that, I have sent an email (not from Outlook!) to the guy who looks after my website. Fingers crossed this sorts it.

[robinh73]

I have found a good IT company and they are sorting this out, along with a few tweaks to the website.
Thanks for all the help chaps, very much appreciated.