hello and in this video we're going to look at what to do and how to overcome uh a problem if you're trying to send out emails using Office 365 and you're getting the error message wait for it uh 550 and then it's 5.7 705 which basically says that access is denied because the tenant has exceeded the threshold so in this video we'll go through what's happened and what you can do about it to get email working again to send out I'm Gavin from Lucid Computer Solutions welcome to the channel welcome to the video so yeah
what we're going to do is um look at what's happened to get this error message in the first place the steps you need to take and then the actual uh resolution to get yourselves being able to send out email again so yeah the error code that you get is 550 5.77 5 it says access is denied and the tenant has exceeded the threshold for sending out email so what that means in plain English terms it means something has happened where you've sent out too many emails and therefore you are now blocked from sending out any
more emails this doesn't affect inbound emails you're more than likely still receiving email but you're you're not able to send any out now this um video is aimed at really Office 365 administrators um most people might be able to um go through the resolution and um reach out to Microsoft for help but yeah this is really AED at Office 365 admins I know many of my videos it's normally reviews and tips for the for for anyone really um but this one yeah really is for Office 365 admins right anyway so what's happened to get you
to this stage well yeah you've basically send out too many emails and the reasons for that could be is that you've got a compromised um Office 365 account and somebody is using them details to send out email in bulk spam emails more than likely um so you could well have a compromised email account so what you need to do is do some Diagnostics you need to check the outbound email um log to see what's going on there there's a high probability you might find that somebody within that 365 environment is the corporate you know it's
one person it's one account that account if that is the case you need to immediately reset the password to something nice and secure but also block signin as well after that because because if they are still literally using them details to send out spam emails by doing that you'll stop that in its tracks so you must reset the password to something long and unfriendly and complex and you must block any signings from that person's account but the key to this as I said is checking the mail log in the first place to see what's going
on now if you haven't got a compromised account it could well be still check the log and it could be because for example you're trying to do mass emails to thousands and thousands of people perhaps maybe for legitimate reasons but that isn't the way to go about things is sending it through your own Outlook or using your 365 details to do so that could be for a newsletter that could be literally you using Outlook to send out a bulk email you really need to avoid all that stuff there's proper tools for doing that kind of
stuff proper newsletter tools proper bulk sending tools but just doing it through Office 365 is going to cause you problems again and again and again and again so please don't do that so that could be the other reason um so yeah the M log is the key to all this though is to see who's doing it and you got to stop them that person in their tracks from doing stuff and if you think it's something dodgy as I've already talked about reset the password and block that account from signing back in until you've resolved the
problem what you should also do as well is if this is a security related problem you should if you haven't done so already enable two- Factor authentication or multiactor authentication whatever you want to call it to every single person who has a license within Office 365 because that adds that extra layer of protection and when we get to the resolution here this is really important that you've turned on multiactor authentication and people have set it up before you do the final steps to get you sending our email again so yeah if you've not done so
already enable two Factor authentication help people get set up with that so you know they use uh either the Microsoft authenticator app or they use orthy or something like that to get um to fi up and running on their account so once you've done all those things what you then need to do is basically there's no if you want to get this working quickly you need to contact Microsoft directly because Microsoft are the ones who have blocked you they're the ones who will be able to remove you from being blocked as well and the best
way to do this the quickest way don't twe all your fums and sit around and just hope that somebody at Microsoft knows your blocked and removes you that could take a very long time you need to contact them via the office 365 admin and support center there's um the ability in there to contact Microsoft um you might see it referred to as like kind of raising a support incident or a support ticket with Microsoft you must do that so you must explain what's happened this is why the multiactor authentication is important you must explain what's
happened you must explain the actions you've taken as in if you did have a compromised email account that was sending out mass emails and um you need to say you've identified that that you reset the password you've set up multiactor authentication and obviously there isn't any more spam currently being attempted to be send out you must do all that first and explain that in your contact with Microsoft you must explain you've taken them steps because if you haven't they won't unblock you you must prove you've taken the steps you've taken these actions and they'll like
that and they'll unblock you so what we found was would you've contacted Microsoft realistically in around 2 to three hours time you should have a response back from them and once they've gone through them checks to see that what you've done and the steps you've taken to to stop the uh the mass emailing then they will unblock you and once they unblock you and they say they're going to do that it normally takes around an hour or so to actually kick in and then you'll be able to send out emails again as normal so in
summary you must take the steps I've mentioned resetting passwords blocking signings where needed um enabling multiactor authentication on every single person who has a 365 license and then contact Microsoft to say what's happened to say what you've done and to request that they unblock you and allow you to send out again that is the simplest and quickest method to overcome look at my notes um the error message 550 5.7.5 and it says access denied tenant has exceeded threshold that is what you do to overcome that and get sending out again so hopefully that video has
helped you um please do smash that like button for me really helps grow the channel doesn't cost anything feel free to ask me any questions post them in the comments section down below and I will try my best to get back to you um please do subscribe to the channel and all the links are down below to connect with me on the likes of um Instagram and Linkedin and Twitter or X as it's now known so I'll see you on the next video
