I need to add a new signature to all our users in Zimbra (using the following command: zmprov csig firstname.lastname@example.org SignatureTest zimbraPrefMailSignatureHTML "< code HTML >").
In this HTML code there is an <a href="http://www.zimbra.com/forums/administrators/..." containing the logo of the company. In Zimbra exist a place to upload this image (logo.jpg) and using the HTML for something as <a href="https://ourzimbraserver.com/example/logo.jpg"> ?
Thank you for your help.
EDIT: jorgedelacruz.es solution worked well.