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I'm migrating emails tenant to tenant in 365 and need help resolving mail flow issues. The main problem is that emails are being marked as spam, both within our organization and by external recipients. Key Requirements: - Experience with 365 tenant-to-tenant migrations - Strong understanding of mail flow and spam filtering - Ability to diagnose and fix spam-related issues Ideal Skills: - Microsoft 365 expertise - Email deliverability knowledge - Problem-solving skills
Project ID: 40468861
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Active 6 days ago
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12 freelancers are bidding on average $67 AUD/hour for this job

Hi, I can help troubleshoot and resolve the mail flow and spam issues during your Microsoft 365 tenant-to-tenant migration. I have experience with: • Microsoft 365 migrations and coexistence setups • SPF, DKIM, DMARC, and mail routing configuration • Exchange Online protection and spam filtering • Diagnosing internal and external deliverability issues • Mail flow analysis and reputation troubleshooting I can review the current configuration, identify why messages are being flagged as spam, and implement the necessary fixes to restore proper inbox delivery. Best regards, Muhammad Usman
$50 AUD in 40 days
6.5
6.5

As a freelancer specializing in Klaviyo and email marketing, especially within the realm of addressing deliverability and spam issues, I bring a unique skill set to your 365 tenant-to-tenant migration. Although my main focus has been e-commerce marketing, I understand the paramount importance of effective mail flow for any business, and I am confident that my troubleshooting skills can extend well into your task. My familiarity with Klaviyo means that I'm a seasoned problem-solver when it comes to email-related complications. By leveraging my expertise on email design, segmentation, and deliverability, I have consistently enabled brands to optimize their email campaigns in order to build meaningful connections with their audience. Evidently, minimizing spam filtration has been essential in achieving this goal. In light of this, my ability to mitigate potential issues preemptively and to quickly resolve discrepancies should lend itself well to your migration process. Why not take advantage of my astute understanding of Microsoft 365 dynamics and experience with tenant-to-tenant migrations? Make a better choice for your project and let's chat further on how I can bring value to your 365 transition process.
$50 AUD in 40 days
6.4
6.4

Hi, I understand you are moving emails from one Microsoft 365 tenant to another and the main issue is that messages are landing in spam for both internal users and outside recipients. I can review the mail flow, Exchange Online settings, accepted domains, connectors, DNS records like SPF, DKIM and DMARC, plus spam filter and transport rules to find what is causing this. I will also check if the migration setup is affecting sender trust, then make the needed fixes and test email delivery to confirm mail is reaching inboxes properly. Have SPF, DKIM, and DMARC already been set up and verified for the sending domain in the new Microsoft 365 tenant? Are emails going to spam for all users or only specific mailboxes, domains, or external recipients? Are you using any third-party spam filter, gateway, or email security tool along with Microsoft 365? Can you share message headers or a sample failed/spam email so I can trace the exact reason? Thanks,
$50 AUD in 27 days
5.6
5.6

Hi there, I have managed to solve complex email Deliverability/spam issues. I would like to assist you. Please let me know a good time to discuss. Thanks. Here is one of the similar projects I completed earlier. https://www.freelancer.com/projects/Fix-Outlook-Email-Deliverability
$100 AUD in 1 day
5.3
5.3

As an email automation specialist with hands-on experience in Microsoft 365 and Exchange, as well as comprehensive knowledge of email deliverability, I believe I'm the ideal candidate to help you resolve the spam-related issues you're currently facing during your tenant-to-tenant migrations. My substantial understanding of mail flow and years of dealing with similar challenges have honed my problem-solving skills even further, which means I can quickly diagnose the sources of these spam problems and apply effective solutions. My focus has always been on providing seamless user experiences by promoting high deliverability rates and maximizing the advantages of platforms such as Microsoft 365. Moreover, one thing that sets me apart is my commitment to delivering not just functional outcomes, but scalable ones too. I don't only "set up" software; I architect holistic and high-performing automations tailored to your specific needs. By choosing me for this project, you will benefit from clean, reliable, and efficient systems that can significantly improve your organization's productivity and overall email management.
$50 AUD in 40 days
4.2
4.2

Hello, I can help diagnose and resolve the mail flow and spam filtering issues related to your Microsoft 365 tenant-to-tenant migration. I have experience working with Microsoft 365 environments, mail routing, authentication records, and email deliverability troubleshooting. I understand the common issues that occur during migrations, especially with spam classification for both internal and external recipients. My approach would include: * Reviewing current mail flow configuration * Checking SPF, DKIM, and DMARC records * Analyzing Exchange Online protection and anti-spam policies * Verifying connectors, domains, and tenant configuration * Identifying reputation or authentication issues causing spam classification * Testing and validating email deliverability after fixes I can work carefully to resolve the issues without disrupting existing mail services and ensure proper mail flow across both tenants. Looking forward to discussing the environment and current setup further. Aiman.
$50 AUD in 40 days
1.5
1.5

Hi there, thanks for reaching out. I’m Cora May, and I’ve helped organizations during Microsoft 365 tenant-to-tenant migrations where mail flow and spam filtering turn problematic. When emails start being marked as spam internally and by external recipients, I typically troubleshoot from the top down: DNS/authentication (SPF, DKIM, DMARC), inbound/outbound connectors, routing, and Exchange Online protection policies (including anti-spam and allow/block lists). I also validate deliverability signals such as message headers, reputation impact, and any changes to sending patterns that can trigger filters right after migration. If needed, I can guide you through warm-up strategies and safe adjustments to policies to restore trust while preventing future false positives. To confirm the best path, what are the exact NDR/bounce or spam-delivery symptoms you’re seeing (internal quarantine vs external inbox vs “junk”)? Also, are you migrating via cutover/staged mailbox moves or updating mailbox routing with new domains and shared custom domains? Best regards!
$50 AUD in 21 days
0.0
0.0

Hi, The issue likely goes beyond basic migration and is probably tied to mail authentication, tenant configuration, or reputation settings after the tenant-to-tenant move. I can help diagnose and resolve: • Spam/junk classification internally and externally • Mail flow configuration issues in Microsoft 365 • SPF, DKIM, and DMARC validation problems • Exchange Online protection/filter policy conflicts • Domain and connector configuration issues • Sender reputation and deliverability checks after migration A few important questions so I can narrow this down quickly: 1. Was the migration completed fully already, or is it still in progress? 2. Are all domains already verified and pointed to the new tenant? 3. Have SPF, DKIM, and DMARC been updated for the new environment? 4. Are messages landing in spam for all recipients or only certain providers (Gmail, Outlook, etc.)? 5. Are internal emails also being flagged between users on the same tenant? 6. Was any third-party migration tool used? My approach would be: * audit the current mail flow and authentication setup, * identify why Microsoft/external providers distrust the messages, * then correct the configuration and test deliverability properly. Once I review the current setup and message headers, I can usually identify the main cause fairly quickly.
$50 AUD in 40 days
0.0
0.0

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