[gmx-developers] Mails rejected with "The message's content type was not explicitly allowed"

Rossen Apostolov rossen at kth.se
Thu Jul 5 15:24:34 CEST 2012

Dear all,

Recently the Gromacs mailing lists have been used for sending spam and 
viruses, and thus now only plain text messages are accepted.

If you have received rejected mails saying "The message's content type 
was not explicitly allowed" it means that you have used in your mail 
special styles or formatting (e.g. bold typeface, colors etc.).

Check your email client settings about how to send messages as plain 
text, e.g. in GMail make sure to click on "Compose -> Plain Text". Check 
also whether a formatted signature is added.

Attachments are also not allowed but you could include links for downloads.

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