Brackets infront of E-Mails

[NoBohrer1]

So im a complete newbie with roundcube however it is used with my new email stuff and some emails which arent spam have [SPAM] infront of the email which id like to remove.
i have attached an example picture

[Dmitry42]

its not Roundcube work - its your smtp server with spam/antivirus filter.
Roundcube just web-based mail client