To accept mails of large sizes from valid senders, the message size settings have to be increased in the server. How to fix error 552 ‘5.3.4 Message size exceeds fixed maximum message size’ in Exchange server So, for a server to accept messages from the internet with size around 15 MB, all the message limits should be set at 20 MB, considering the content conversion size. If the message is sent to or received to the server from a user on the Internet, this organizational limit will be applied to that mail.īut for internal users who send mail to each other after successful authentication, the user mailbox limit takes precedence over all other size restrictions. The maximum allowable message size for a server should be set as the organizational limit. As a result, a message of 9 MB may fail to deliver to a server with size limit 10 MB.Īlso, the precedence of the message size limits has to be noted before changing the settings. Exchange server converts an internet/ MIME message to MAPI/Exchange format, and vice versa for transmission.Īfter this content conversion process, the message size generally increases by about 30%. In Exchange mail servers, content conversion happens for mails. How to determine the email message size limits? To resolve a valid email bouncing with error 552, these attachment limits have to be increased or adjusted appropriately.īut before we get into the detailed steps on how to increase these limits to accept valid user mails with attachments, we’ll see how these message size limits are to be calculated. If the message size in the email exceeds any of these limits that are allowed for a particular email user account, it will be rejected with this error 552 message. In an Exchange server, there are mainly 4 settings for message size limitations: a. If the email size exceeds that limit, it will be rejected by the mail server.Įrror 552 ‘5.3.4 Message size exceeds fixed maximum message size’ is an email error commonly seen in bounce messages that generate from recipients using Exchange mail server. 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. NOTE: You also have the option to test your connection to the server, if you wish, by clicking the "Test" button after you have filled out the other information.Ħ) Select your source/destination folder on the opposite side, and then click the green "Apply" button.ħ) Your job is now ready to Analyze and Sync.Users sending messages with attachments to recipients hosted in Exchange servers can end up receiving bounce mails due these attachments. Setting a WebDAV as a Source or Destinationġ) Open GoodSync and select or create your Job.Ģ) Click the Left or Right Browse buttons to view the files and folders available for selection.ģ) Select WebDAV from the list of supported services.Ĥ) Enter the server name into the Server Address field in the format: ĥ) If you would like to specify a WebDAV root, you have the option to do so in the WebDAV root field.Ħ) Enter your UserID or Email and Password for the server in the specified fields.Īfter entering this information, click the "Save" button at the bottom right. You will need the following information to set a WebDAV server as a source or destination: If you haven't already, download and install GoodSync.
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