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20140421 - Scheduled Maintenance: Network Upgrade

Subject: 21 April 2014 Scheduled Maintenance: Network upgrade (mkc1)


  • Change Title: Network upgrade
  • Change Type: Update
  • Risk: Medium
  • Maintenance Date: Monday, April 21, 2014
  • Maintenance Window: 16:00 PM - 16:30 CDT
  • Expected Downtime(Min.): 1
  • Services(s) Affected: E-Mail Spooling Services, SPAM Filtering Services
  • Expected Impact: One of our Internet connectivity providers will be upgrading their core switching hardware to double available capacity. There may be multiple connection resets during the course of the maintenance.

We appreciate your patience during this work and 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 e-mail servers do not limit the size of individual e-mail attachments. The 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.