To limit bandwidth usage, this email size limit is often restricted to a few MBs in most servers. These limits can either be global or individual-account specific or both. What is email error 552 ‘5.3.4 Message size exceeds fixed maximum message size’Įvery mail server has custom settings for the size of mails users can send and receive through it. If the bounce happens due to the content of the attachment, the error message would be similar to error 552 – ‘5.7.0 Our system detected an illegal attachment on your message.’ The error message seen by the senders in the bounce mail in cases of huge attachment size limit would be error 552 – ‘5.3.4 Message size exceeds fixed maximum message size’. In these servers, we’ve seen huge attachments or unsupported attachments formats causing email error 552. Our Support Engineers support hundreds of Exchange servers for web hosts, web designers and other online businesses. You can generate App Password and authenticate with Apptivo.Users sending messages with attachments to recipients hosted in Exchange servers can end up receiving bounce mails due these attachments. Note: Since, Google has no longer supports the usage of third party app sign in for authentication. App Passwords are only available for accounts that have 2-Step Verification enabled. Authenticate by generating App PasswordĪn App Password is a passcode that grants access to your Google Account to a less secure app or device. In order to set up one time password to authenticate your Gmail address, click here to read Google guide on 2-step verification for yourself. Or if you are still have problems, check out our troubleshooting guide. If you don't completely understand our email integration, click here to read an overview of the CRM email sync. More about Apptivo's IMAP email integration Just go back to Apptivo, and re-try the same email/password, and you should successfully authenticate. After submitting this page, you have 10 minutes to authenticate the account. Now all you need to do is manually authenticate your account, by navigating to the Manual account unlocking page on the Google website. This is because Google has many different security protections in place to make sure no spam is sent from your email account.Īfter attempting to authenticate in Apptivo, you should receive an email from Google notifying you of possible unauthorized access to your account. ![]() After the first attempt at providing your username & password into Apptivo, you still may receive an error even if all information is correct. This is the most common problem that will cause an authentication error. Setup email and click here to read Google's guide on enabling IMAP for yourself. ![]() Port: 993 How do check if IMAP is enabled in Gmail settings?īy default, IMAP access is turned off for new Gmail accounts. Make sure you have these values entered into the form: Once you've double checked your email & password. What is the Correct Server and Port Number? ![]() Authenticate by generating App Password.The Account is not authenticated with Google/Google authentication failed email (most common issue).If you haven't yet, head over to the IMAP setup guide to see where/how to link your account.įor Gmail users, there are a few possible reasons of gmail authentication failed setting up email: But when you try to authenticate email address, you might potentially run into errors related to authentication. Manage your orders and inventory seamlessly.Įveryone will be happy to know that Apptivo now fully integrates with any standard Gmail account, to sync and setup our email between CRM and Google. Send personalised bulk emails to your audience.īuilt-in billing software with invoicing features.Īcquire superior support and project management. Stay connected to the apps you already use.Ĭomplete CRM tools to centralize your data. Manage your orders and inventory seamlessly. BillingĪcquire superior support and project management. Email Marketingīuilt-in billing software with invoicing features. Send personalised bulk emails to your audience. Complete CRM tools to centralize your data.
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