Mails not arriving anymore

[tomdeclercq]

Hi,

https://www.3cx.com/community/threads/not-receiving-voicemail-emails.87085/

I see to have the same problem.

Customer is on office 365 no mails from 3cx are arriving : voicemail, welcome ...

But test mails to other domains are working.

Customer checked

 

[tomdeclercq]

It's a free license system, ik want to buy the support ticket - if I am sure it's credited afterwards.

- Self hosted
- ovh
- up to date
- everything else works.

 

[SweetAction]

If you are using 3CX SMTP and any message bounced, the address will be blocked for 7 days.

Try switching to 365 mail or using another address

 

[tomdeclercq]

Hi SweetAction,

Thanks for that information - never seen that info. Yes seen it's a free system its forced to the 3CX SMTP. We worked around by another address. But I don't know if it is blacklisted @ 3CX or at the spam filter / o365 ( that's managed by a big central company unfortunately ).

So if it's the 3cx block in one week it should work again ? Little bit unfortunately that happens hidden .

 

[SweetAction]

If another address works then it's likely blacklisted by 3CX and will work again in 1 week.

 

[tomdeclercq]

It would be nice that at least he shows it in the log or the interface that you are blocked for xx time.

Thanks SweetAction for you usefull tips.