Problems accessing our Smart Host? Please check your Root Certificates ...

Have you been experiencing problems accessing our Smart Host since Friday (10/14/2016)? If so, please check your local Certificate Store.

On Thursday (10/13/2016) GlobalSign (the provider of the SSL certificate on this system) had problems with their Intermediate Certificates. For more details, please see: OCSP Revocation errors FAQ.

To more quickly resolve this issue, GlobalSign recommended that we replace the AlphaSSL CA - SHA256 - G2 (Serial #: 04 00 00 00 00 01 44 4e f0 36 31) Intermediate Certificate with AlphaSSL CA - SHA256 - G2 (Serial #: 48 ca 81 79 f8 3e 8a 42 f3 f5 cd e2 b1 3f). According to GlobalSign's OCSP Revocation errors troubleshooting guide, no further changes were required.

Today, through the assistance of a customer, we have discovered that the two Intermediate Certificates trace back to different Root Certificates:

  • The older Intermediate Certificate - AlphaSSL CA - SHA256 - G2 (Serial #: 04 00 00 00 00 01 44 4e f0 36 31) - traces back to the GlobalSign Root R1 Certificate (Serial #: ‎04 00 00 00 00 01 15 4b 5a c3 94).
  • The new Intermediate Certificate - AlphaSSL CA - SHA256 - G2 (Serial #: 48 ca 81 79 f8 3e 8a 42 f3 f5 cd e2 b1 3f) - traces back to the GlobalSign Root R3 Certificate (Serial #: 04:00:00:00:00:01:21:58:53:08:a2).

While all of the appropriate Root Certificates should already be present in your system, please make sure that the GlobalSign Root R3 Certificate (Serial #: 04:00:00:00:00:01:21:58:53:08:a2) is installed in your system. Please see: GlobalSign Root Certificates the list of GlobalSign Root Certificates and links for testing your system against them.


We appreciate your business 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 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.