Microsoft Outlook is not sending emails

if you're using firstsales io to send emails via microsoft outlook and encounter issues where emails are not being sent or accounts become disconnected, several factors could be responsible this troubleshooting guide will help you identify and resolve common issues, including exceeding daily sending limits account suspensions configuration errors other potential problems 1\ exceeding microsoft outlook sending limits microsoft enforces specific sending limits to prevent spam and ensure system reliability if these limits are exceeded, your account may be temporarily restricted from sending emails key limits include daily sending limit per user up to 10,000 recipients per day https //learn microsoft com/en us/office365/servicedescriptions/exchange online service description/exchange online limits recipients per message up to 500 recipients in the to, cc, and bcc fields combined https //learn microsoft com/en us/office365/servicedescriptions/exchange online service description/exchange online limits recipient rate limit a maximum of 10,000 recipients per 24 hour period https //learn microsoft com/en us/office365/servicedescriptions/exchange online service description/exchange online limits exceeding these limits can result in a temporary suspension of your sending capabilities https //learn microsoft com/en us/office365/servicedescriptions/exchange online service description/exchange online limits 2\ account suspension reasons microsoft may suspend accounts for various reasons, including suspicious activity unusual sending patterns or behaviors that resemble spam can trigger automatic suspensions https //support microsoft com/en us/account billing/account has been locked 805e8b0d 4141 29b2 7b65 df6ff6c9ce27 policy violations violating microsoft’s mail policies, such as sending spam or harmful content, can lead to suspension https //www microsoft com/en gb/digitalsafety/moderation and enforcement/account suspension unverified sign ins sign in attempts from unrecognized locations or devices may result in temporary suspensions to protect account security https //support microsoft com/en us/account billing/account has been locked 805e8b0d 4141 29b2 7b65 df6ff6c9ce27 3\ configuration errors incorrect settings can disrupt email sending ensure the following configurations are correct smtp server settings server address smtp office365 com port 587 (tls) authentication use your full outlook email address and password oauth 2 0 authentication ensure that oauth 2 0 is properly configured, as older authentication methods may not be supported 4\ other potential issues billing problems unresolved billing issues can lead to account suspension verify that your billing information is current and that there are no outstanding payments https //support microsoft com/en us/office/reactivate an account that has been blocked 08e0c662 384e 40ab 876e 6ffa35a547a6 third party app interference authorized third party apps with access to your account can cause unexpected changes, including suspensions review and manage app permissions regularly https //support microsoft com/en us/account billing/account has been locked 805e8b0d 4141 29b2 7b65 df6ff6c9ce27 domain registration issues expired domain registrations can disrupt email services ensure your domain is active and properly configured https //learn microsoft com/en us/office365/servicedescriptions/exchange online service description/exchange online limits troubleshooting steps check sending limits review your email activity to ensure you haven’t exceeded microsoft’s sending limits if you have, wait 24 hours for the limits to reset https //learn microsoft com/en us/office365/servicedescriptions/exchange online service description/exchange online limits atus log in to the microsoft admin center to check for suspension notices or alerts if suspended, follow the provided instructionccount https //support microsoft com/en us/account billing/account has been locked 805e8b0d 4141 29b2 7b65 df6ff6c9ce27 verify smtp settings ensure that your smtp server settings in firstsales io match microsoft’s recommended configurations update authentication methods confirm that you’re using supported authentication methods, such as oauth 2 0, especially if using devices or apps that may not support newer protocols inspect third party apps review any third party applications with access to your microsoft account to ensure they are not causing issues https //support microsoft com/en us/account billing/account has been locked 805e8b0d 4141 29b2 7b65 df6ff6c9ce27 contact support if issues persist, reach out to microsoft support or consult the firstsales io support team for assistance preventive measures monitor email activity regularly track your email sending patterns to stay within acceptable limits educate users ensure all users are aware of microsoft’s policies and sending limits to prevent accidental violations regular audits periodically review account settings, third party app permissions, and domain statuses to maintain seamless email operations logical reasoning ensuring comprehensive coverage to ensure this guide addresses all potential issues, consider the following questions and answers what happens if i exceed the daily sending limit? your account may be temporarily restricted from sending emails https //learn microsoft com/en us/office365/servicedescriptions/exchange online service description/exchange online limits can third party apps cause account suspensions? yes, authorized third party apps can make changes on behalf of the admin, potentially leading to suspensions https //support microsoft com/en us/account billing/account has been locked 805e8b0d 4141 29b2 7b65 df6ff6c9ce27 how can i restore a suspended microsoft account? use the microsoft account reset page to reactivate the account, provided the suspension wasn’t due to severe policy violations https //support microsoft com/en us/office/reactivate an account that has been blocked 08e0c662 384e 40ab 876e 6ffa35a547a6 are there specific smtp settings required for microsoft outlook? yes, usem with port 587 (tls), and ensure proper authentication what should i do if my domain registration expires? renew your domain registration promptly to prevent dl services https //learn microsoft com/en us/office365/servicedescriptions/exchange online service description/exchange online limits