AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |
Back to Blog
After microsoft update outlook throttled8/24/2023 ![]() There have been some concerns raised that this is a move by Microsoft to drive people towards their Cloud-based services, something the software giant denies. ![]() Įventually, if remedial action is not taken, the period of delay will progressively increase until sending mails from the server is fully blocked. An example of the SMTP 450 error is below:Ĥ50 4.7.230 Connecting Exchange server version is out-of-date connection to Exchange Online throttled for 5 mins/hr. ![]() In this case, the sending server will automatically try to re-send the message. In this case, Exchange Online will issue a retriable SMTP 450 error to the sending server which will cause the sending server to queue and retry the message later, resulting in delayed delivery of messages. Servers that are unsupported or remain unpatched are persistently vulnerable and cannot be trusted, and therefore email messages sent from them also cannot be trusted.Įxchange Online will begin to throttle messages from it. As such, security vulnerabilities open whenever servers running unpatched versions of Exchange attempt to communicate with other services. Microsoft uses the so-called Zero Trust model, something that we have featured on this blog previously in the context of their abandoning Basic Authentication. However, Microsoft has made it clear they view unpatched servers as a security vulnerability and will be expanding this policy to pressure current users to migrate. Currently, as of the 10 th of May, this only affects on-premise Exchange servers running Exchange Server 2007 that send mail to Exchange Online, Microsoft’s cloud-hosted email service in a hybrid deployment setup. Microsoft has announced their intention to throttle traffic from Legacy Exchange servers which have not been patched and updated or are otherwise unsupported.
0 Comments
Read More
Leave a Reply. |