Mail loop between spam filter and 365
Hi all, I was wondering if anyone had seen this before. We have our own spam filter cluster that emails go through before being sent on to 365. When emailing from our company domain (365 hosted) to another 365 hosted customer domain we receive an NDR from our spam filter stating that: Remote Server returned '554 5.4.0 Error: too many hops' These are two completely separate 365 tenancies, both have the same mail flow of going out of 365, to our spam filter back to 365. My customer emails don't get this too many hops error but I do when emailing them? Looking at the header analysis I can see the Outlook host sending the message straight back to our spam filter cluster, step 8 - 9, which the spam filter tries to send it back to 365 again, getting stuck in a loop until the too many hops count has been reached. Completely stumped and Microsoft support has thus far not helped. Kind regards, Tim Earl
Office 365 Groups & Spam
Because Groups do not have folders in Outlook, can anyone tell me what happens to mail marked as spam sent to 365 Group address when configured to not "Send copies of group conversations and events to group members' inboxes" or notifications disabled when rules are in-place?
office 365 mail SPF Fail but still delivered
Hello today i received mail from my organization. i check headers and see that spf failed. Received-SPF: Fail (protection.outlook.com: domain of mydomain.com does not designate 67.220.184.98 as permitted sender) receiver=protection.outlook.com; why spffailed mails normally received? i check SPF at mxtoolbox and SPF is correctly configured.Email Exchange Single User Issue
I have an issue where a single user automatically has any external email sent to their junk folder, what is odd is an email can be sent by en external user to someone else and cc this user or sent to this user an cc someone else and the email for the user in question is still sent to the junk folder but the other user receives the email in their normal inbox folder. I have tested this with sending an email from my own email (which never gets caught as spam) with a simple subject of test email and body of test email. Again I can send this to anyone else but if I send it to the user in question it is sent to their junk folder. If I look in Message Trace I get Status Unfortunately, we aren't able to provide an analysis for this message at this time. For all external emails for this user. There are no specific mail rules in place for this user, all mail rules are global so what would affect one mail box will affect another yet I cannot see why this is happening. Any help would be appreciated.
Office365 groups spam emails
Hi, My company recently experienced a spear phising attack. Luckily, we discovered it before anything happened. The email was sent to one of our Office365 groups and was freely distributed to all users in the group, however, it was located in the Junk folder for all users. The group's settings is set to allow external users to email this group, as it is necessary, and to send copies of conversations and event to group members. My question is if groups do not have the default spam filter? If they do, do they simply just send copies of the emails recognized as spam nonetheless? In general, I would just like to know if there is a way to prevent copies of spam emails send to the group to be distributed to its users? Best regards, RasmusOutbound Spam Filter Policy
So I'm trying to configure an outbound Spam filter Policy to prevent a user from always getting thrown in the Restricted Users bin. The Policy I created was very standard and I want it to apply to the user in the screenshot However once it is created it looks as if the Custom outbound Spam policy only applies to users who are recipients of the sending user in the tenant. (internal to internal communication within the tenant) I want this policy to apply to all outbound messages sent from TU@mictestacc123.onmicrosoft.com (even users on other domain) not just ones sent to other users within the tenant. Is this possible?
Valid email sent to group identified as SPAM and sent to Account Junk Folder
I have a group set up to accept email from external senders, and to forward the email to group members. However, the email is coming in, then being directed to the junk folder of the administration account, and not going to the inbox of the that account or the testuser account (both legitimate mailboxes.) What the heck is happening? Here's the trace information: Sender: cxxxxxxy@gmail.com Recipient: axxxxx@nxxxxx.ca Received -> Processed -> Delivered Status: The message was forwarded to the Inbox folder of the following address:<br/><br/><b>Redirected to:</b> ‎axxxxx@nxxxxx.ca‎ Date (UTC) | Event | Detail | ------------------------------------ 4/24/2021, 8:23 PM | Receive | Message received by: YQXPR01MB4278.CANPRD01.PROD.OUTLOOK.COM using TLS1.2 with AES256 4/24/2021, 8:23 PM | Expand DL | The message was sent to a distribution list (DL) that was expanded to the recipients of the DL. 4/24/2021, 8:23 PM | Redirect | The message was directed to axxxxx@nxxxxx.ca. 4/24/2021, 8:23 PM | Spam | No detail information available. 4/24/2021, 8:23 PM | Redirect | The message was directed to axxxxx@nxxxxx.ca. 4/24/2021, 8:23 PM | Spam | No detail information available. 4/24/2021, 8:23 PM | Deliver | The message was delivered to the Junk Email folder.
