20220103 - UPDATED - Microsoft Issues Fix for Exchange Y2K22 Bug

Do you have an on-premise Exchange Server and appear to be missing e-mails since January 1st? It is likely that your system is being affected by what is now known as the Y2K22 Bug.

Here is Microsoft's response to this issue: Email Stuck in Exchange On-premises Transport Queues

Here are some additional links regarding this issue:

We welcome any feedback. Thank you for being a ETRN customer. Please contact us if you have any questions.

We Answer Your Questions: FAQ

Q: What is the maximum e-mail attachment size?

A: The ETRN.com e-mail servers do not limit the size of individual e-mail attachments. The ETRN.com e-mail servers do impose a 400 MB maximum total message size limit. Individual customers can choose a smaller message size limit. We can also customize the handling of "over-sized" e-mails. Please contact us to discuss your specific needs. A couple of important facts:

1. Attachments are typically encoded in what is called Base64[1]. As a result, the actual length of MIME-compliant Base64-encoded binary data is usually about 137% of the original file size.

2. E-mails often contain both plain text and HTML components. This also increases the overall size of the e-mail.