topic Fix NDR error "550 4.4.7" in Exchange Online in Email

Fix NDR error "550 4.4.7" in Exchange Online

QWERTY3 — Sat, 09 Mar 2024 15:22:35 GMT

Can anyone tell me how to fix this please a friend just told me they received this after trying to send me a email which I never got. seems to be happening only with outlook or 365.

Many Thanks

Re: Fix NDR error "550 4.4.7" in Exchange Online

Mark39 — Sat, 09 Mar 2024 15:36:35 GMT

If it's because Sky's mail servers are rejecting the message rather than an issue with the sender's network, you would need to speak to Sky about it. However, the likelihood of finding an adviser who knows who to escalate it to (almost certainly it's not something a front line adviser would have any clue about) is small, I suspect. From a practical viewpoint, it would be simpler for your friend to send from a different email address,

Re: Fix NDR error "550 4.4.7" in Exchange Online

Stevel8761 — Sun, 10 Mar 2024 18:28:37 GMT

I have the same issue from one domain that started on 8th March. Spoke to @Sky today with zero support .... not sure what to do now!

I've had hundreds of emails from this domain over the past few weeks with no issues.

If anybody can support please help ...

Re: Fix NDR error "550 4.4.7" in Exchange Online

QWERTY3 — Mon, 11 Mar 2024 17:18:57 GMT

The 8th March was when mine started going wrong as well. have emails from them on the 7th march.

Re: Fix NDR error "550 4.4.7" in Exchange Online

Stevel8761 — Mon, 11 Mar 2024 18:30:04 GMT

Im advised there is a nationwide issue with this, however having spoken to Sky this morning they have said "we dont support Sky email any more, its all Yahoo" & trying to contact Yahoo is impossible ... so Im sat with my fingers crossed for now.

Re: Fix NDR error "550 4.4.7" in Exchange Online

QWERTY3 — Tue, 12 Mar 2024 09:23:42 GMT

I think mine might be working again have you asked someone to resend an email to check.

I sent myself one from an email that wasnt getting thru and it came thru this morning.

Also received one from a person that wasnt getting thru before.

Hopefully its sorted fingers crossed.

Re: Fix NDR error "550 4.4.7" in Exchange Online

Stevel8761 — Tue, 12 Mar 2024 13:51:37 GMT

Yes, all back working since circa 11pm last night.