

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. More information about the file formats is available in the program help.Users sending messages with attachments to recipients hosted in Exchange servers can end up receiving bounce mails due these attachments.



Conversion of trace files to different trace formats and to CSV (see table below).
