Allow spaces in passwords.
I have been having all of my users use a sentence for their passwords. without spaces this is really going to confuse them. Just switching to plesk now.
Thank you for your input! We will consider this functionality in upcoming releases, if it will be popular.
Everyone, please continue voting for this feature if you consider it important.
In June 2017, the United States National Institute of Standards and Technology (NIST) issued a new revision of their digital authentication guidelines, stating that "all printing ASCII characters as well as the space character should be acceptable in passwords". (See first part of section 188.8.131.52 of this document: http://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-63b.pdf).
Allowing password phrases is really a must: it allows humans to use long passwords which are easy to remember and hard to guess/hack, and it will be easier for Plesk admins to enforce very strong passwords. (Even with Fail2Ban enabled, a strong password is still a must.)
Thanks for implementing this throughout Plesk in one of the following versions!