Other fields in this header are used exclusively by the Microsoft anti-spam team for diagnostic purposes. -Lastly, For information about how to view an email message header in various email clients, see View internet message headers in Outlook. A higher BCL indicates a bulk mail message is more likely to generate complaints (and is therefore more likely to be spam). It might be theirs. The spam confidence level (SCL) of the message. Use the 90-day Defender for Office 365 trial at the Microsoft 365 Defender portal trials hub. Microsoft 365 Defender. For more information, see. This topic has been locked by an administrator and is no longer open for commenting. Also, since the SENDER is reporting the error they should be able to tell you which MTA it was that sent that status code. Where is the 601 status code defined in a SMTP RFC? And if the CompAuth result is fail, these are the reasons why it could fail: 000 means the message failed DMARC with an action of reject or quarantine. Test retiring Exchange Server 2016 hybrid server? I have checked the header but there are no clues as to what reason the email is classified as spam. Possible values include: Domain identified in the DKIM signature if any. Name the rule. The sending domain is attempting to, 9.20: User impersonation. It might be a service they use. For one of these providers, we have SPF setup, authenticating, and DKIM is setup as well. This value. header.from=example.com;compauth=fail reason=601 Received-SPF: Fail (protection.outlook.com: domain of . The message was identified as phishing and will also be marked with one of the following values: Filtering was skipped and the message was blocked because it was sent from an address in a user's Blocked Senders list. I finally might have the budget for next year to refresh my servers.I'm undecided if I should stick with the traditional HPE 2062 MSA array (Dual Controller) with 15k SAS drives or move to a Nimble HF appliance. We use MailChimp to send out campaign emails to thousands of people, a lot of which are part of our internal organization. log files they produce, too. Test ads showing reviews when retargeting, Test Robots.Txt Blocking On Google Search Console. instructions were from last week, so that may be why they are already out of Used by Microsoft 365 to combine multiple types of authentication such as SPF, DKIM, DMARC, or any other part of the message to determine whether or not the message is authenticated. This thread is locked. Do you have any suggestions to mark these emails as spam/phishing/spoofed email and either block them or mark them as junk/send to quarantine? Return-Pathsupport@mail.example.jpsupport. Looking at MX Toolbox, it reports the following: Check to DMARC Compliant (No DMARC Record Found) The IP address was not found on any IP reputation list. Users should simply add to their safe sender lists in Outlook or OWA. OR DKIM allows the receiver to check that an email claimed to have come from a specific domain was indeed authorized by the owner of that domain. You can use this IP address in the IP Allow List or the IP Block List. An item to check is login to the server that SmarterMail is installed on and try to telnet to the IP address 116.251.204.147 and see if you get a 220 response. Does anyone know if there are any free training anywhere ? What actions are set for your anti-phishing polices? Case 1: If you don't set up DKIM Signature, ESPs such as GSuite & Office365 sign all your outgoing emails with their default DKIM Signature Key. For more information about how admins can manage a user's Safe Senders list, see Configure junk email settings on Exchange Online mailboxes. Filtering was skipped and the message was allowed because it was sent from an address in a user's Safe Senders list. In all Microsoft 365 organizations, Exchange Online Protection (EOP) scans all incoming messages for spam, malware, and other threats. Purchasing laptops & equipment This is the domain that's queried for the public key. This can be achieved on an Office 365 tenant by adding a transport rule.An email not passing DMARC tests of a domain having p=reject will have dmarc=fail action=oreject and compauth=fail reason=000 in the Authentication-Results header.. You could catch the dmarc=fail action=oreject:. If I start to see legitimate emails being caught by Anti Spam (I have one last night from our helpdesk) do I create a transport rule to allow the email or just whitelist? Wow that was lucky! Monday, April 13, 2020 6:47 PM Answers The results of these scans are added to the following header fields in messages: X-Forefront-Antispam-Report: Contains information about the message and about how it was processed. What is set for the MAIL FROM compared to the FROM:? FYI, you should be looking at the SMTP protocol logs, not the message tracking logs. Bryce (IBM) about building a "Giant Brain," which they eventually did (Read more HERE.) Please also refer to this similar thread:Phishing emails Fail SPF but Arrive in Inbox, Try turning SPF record: hard fail on, on the default SPAM filter. But if that's the case then what's up with the SPF failure? compauth=fail reason=601 Received-SPF: None (protection.outlook.com: eu-smtp-1.mimecast.com does not designate permitted sender hosts) You can setup campaign monitor to sign as your domain with DKIM, which is the correct solution vs just whitelisting and telling your servers to ignore the issue . The message skipped spam filtering because the source IP address was in the IP Allow List. What You Need To Know About DKIM Fail. Similar to SFV:SKN, the message skipped spam filtering for another reason (for example, an intra-organizational email within a tenant). The message was marked as spam by spam filtering. Review the Composite Authentication charts below for more information about the results. The HELO or EHLO string of the connecting email server. A critical event . I ran a message header analyzer and found this. The error message is 'compauth=fail reason=601'. We've been receiving emails lately where the sender is spoofing some of our accounts and in the header it's stating "Does not desiginate permitted sender host" (which is true) and the Authentication Results Save questions or answers and organize your favorite content. This tool helps parse headers and put them into a more readable format. For example, the message received a DMARC fail with an action of quarantine or reject. Anti-phishing policies look for lookalike domains and senders, whereas anti-spoofing is more concerned with domain authentication (SPF, DMARC, and DKIM). However, the email is not marked as spam and is ending up in our users inboxes. In order to keep pace with new hires, the IT manager is currently stuck doing the following: However, the email is not marked as spam and is ending up in our users inboxes. Possible values include: 9.19: Domain impersonation. We (sender.org) provide a mail server for a client (example.org) and sign outgoing messages with our . The reason the composite authentication passed or failed. For example, the message was marked as SCL 5 to 9 by a mail flow rule. According to your description about "compauth=fail reason=601", compauth=fail means message failed explicit authentication (sending domain published records explicitly in DNS) or implicit authentication (sending domain did not publish records in DNS, so Office 365 interpolated the result as if it had published records). More info about Internet Explorer and Microsoft Edge, Microsoft Defender for Office 365 plan 1 and plan 2, What policy applies when multiple protection methods and detection scans run on your email, a protected user that's specified in an anti-phishing policy, Configure junk email settings on Exchange Online mailboxes, How Microsoft 365 handles inbound email that fails DMARC. The message was released from the quarantine and was sent to the intended recipients. Welcome to the Snap! you having this problem all the time or just with this client? A vast community of Microsoft Office365 users that are working together to support the product and others. If you have any questions or needed further help on this issue, please feel free to post back. Have the sending organization check their side for problems. -Where is the 601 status code defined in a SMTP RFC? (scrubbed of the actual domain). Migrating from mapped drives to SharePoint/Teams, any Typo in "new" Exchange Admin Center: "Match sender Use Ai overlay with a whiteboard in teams. FreshDeskOffice 365 action Indicates the action taken by the spam filter based on the results of the DMARC check. 5 The reason for the DMARC fail on SPF policy ( <policy_evaluated><spf>fail) despite the SPF check passing ( <auth_results><spf><result>pass) is that your SMTP "mailFrom" ( envelope MAIL From or RFC 5321.MailFrom) & your header "From" fields are out of alignment. The following are the authentication results from the headers of a test / example email: Authentication-Results: spf=pass (sender IP is 3.222.0.27) smtp.mailfrom=emailus . reason 001: The message failed implicit authentication (compauth=fail). I have a vendor whose emails are going into a quarantine folder in the O365 admin center. For example: Describes the results of the SPF check for the message. And what the reason code is? There may be a routing problem (it wouldn't be the first time I've seen problems introduced by a misplace static route somewhere between two organizations). In such cases, your email exchange service provider assigns a default DKIM signature to your outbound emails that don't align with the domain in your From header. Possible values include: Describes the results of the DMARC check for the message. Shipping laptops & equipment to end users after they are Did you try turning SPF record: hard fail on, on the default SPAM filter. tnsf@microsoft.com. Can anyone explain what these differences mean? The X-Forefront-Antispam-Report header contains many different fields and values. Anti-Spoofing Protection & MailChimp. are failing with a "compauth=fail reason=601". There was a time when Microsoft IGNORED an SPF hard-fail and treated it as a soft-fail, in spite of that box being checked. Lastly, try increasing the smtp timeout and see if the mail goes through. That 601 status is probably specific The source country as determined by the connecting IP address, which may not be the same as the originating sending IP address. I read that For example: 000: The message failed explicit authentication (compauth=fail). Microsoft Defender for Office 365 plan 1 and plan 2. . Check if compauth.fail.reason.001 is legit website or scam website URL checker is a free tool to detect malicious URLs including malware, scam and phishing links. 2021-05-22 20:01. & Compliance > Threat Management > Policy > Anti-spam > Spoof intelligence Flashback: Back on November 3, 1937, Howard Aiken writes to J.W. For more information about how admins can manage a user's Blocked Senders list, see Configure junk email settings on Exchange Online mailboxes. Learn about who can sign up and trial terms here. After you have the message header information, find the X-Forefront-Antispam-Report header. Test drive when just shopping and comparing? Please remember to We have SPF, DKIM set up, and it appears they are passing, but the anti-spoofing protection sends about half of the emails to the Junk folder in our user inboxes. Configure dmarc and make sure the dkim aligns at least (if the return path can't match the from). If you do not this could be network related or the IP address your telneting from may be blocked on the receiving end. I understand that this is because they are pretending to be ourdomain.com but not originating from o365 so appear to be spoof. For more information, see. In all Microsoft 365 organizations, EOP uses these standards to verify inbound email: SPF. This means that the sending domain did not have email authentication records published, or if they did, they had a weaker failure policy (SPF soft fail or neutral, DMARC policy of p=none). An inbound message may be flagged by multiple forms of protection and multiple detection scans. Here is the contents of the email the client gets: Use "get-receiveconnector" for a list of all the connector names. Safe link checker scan URLs for malware, viruses, scam and phishing links. For more information, see. Ask Question Asked 7 years, 11 months ago. try increasing the smtp timeout and see if the mail goes through. Here is an example of an email that failed Implicit Authentication: authentication-results: spf=pass (sender IP is 63.143.57.146) smtp.mailfrom=email.clickdimensions.com; dkim=pass (signature was verified) header.d=email.clickdimensions.com; dmarc=none action=none header.from=company.com;compauth=fail reason=601. You'll notice that the roadmap item was just added in the last 24 hours, and was immediately listed as "rolling out". Any changes to firewalls recently or did you introduce any spam software etc.? John changed his password and seems to have stopped worrying about it, but I don't think he's taking it anywhere near seriously enough. The receiving MTA fails to align the two domains, and hence . Authentication-results: Contains information about SPF, DKIM, and DMARC (email authentication) results. Hmmm, looks like our SMTP logging was not on. I mean that 601 isn't a status code that I've seen defined in any RFC for the SMTP protocol -- at least not any RFC that Exchange claims it follows. https://docs.microsoft.com/en-us/microsoft-365/security/office-365-security/set-up-anti-phishing-policies?view=o365-worldwide, https://docs.microsoft.com/en-us/microsoft-365/security/office-365-security/tuning-anti-phishing?view=o365-worldwide, https://techcommunity.microsoft.com/t5/exchange/use-orca-to-check-office-365-advanced-threat-protection-settings/td-p/1007866. The value is a 3-digit code. The sending user is attempting to impersonate a user in the recipient's organization, or, 9.25: First contact safety tip. To see the X-header value for each ASF setting, see, The bulk complaint level (BCL) of the message. Spam filtering marked the message as non-spam and the message was sent to the intended recipients. A very common case in which your DMARC may be failing is that you haven't specified a DKIM signature for your domain. For example: Composite authentication result. Describes the results of the DKIM check for the message. DKIM. Copy/Paste Warning. However, when a test email was sent, it still reports compauth=fail reason=601 and gets quarantined by our anti-phishing policy as a spoof email. We have a client that is trying to send us emails but is getting a Delivery Failure notice in return. If your server rejects a message it won't show up in the message tracking logs. I've done that already (see headers in other reply) and it's still happening. In research, we seem to be passing most spam tests. Here is an official document introduces aboutAnti-spoofing protection in Office 365for your The message was marked as non-spam prior to being processed by spam filtering. reference. Do not add to the domain safelist in the anti-spam policy however, thats a bad idea. Do suggestions above help? Test marketing emails going to junk with 'compauth=fail reason=601' We use 'campaign monitor' to send out email newsletters, and it works very well, except any emails which come to our domain are marked by o365 as Junk. Uses the From: domain as the basis of evaluation. Press question mark to learn the rest of the keyboard shortcuts. Learn more. The client is sending the email to two of our users. are failing with a "compauth=fail reason=601". Repeat the steps above for other campaigns as needed. The error message is 'compauth=fail reason=601'. You can copy and paste the contents of a message header into the Message Header Analyzer tool.
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