Zimbra Forums

zimbra-foss-builder is owned by Maldua/BTactic - not zimbra/Synacor.

Adrian posted previously - viewtopic.php?t=74078

You should ask any relevant questions in that thread.

Also, see his newer thread - viewtopic.php?t=74210

luciana78 user has posted two different messages in the forum.

Those messages include tiny external urls (unless you quote-reply the messages you won't notice them).
It's probably done to improve SEO to these pages.

Either the user browser is compromised or he's doing that on purpose.

I will also double-check if there are not other recent similar links (with size=1) in recent posts done in the forum.

It's called a spam bot.

Reported to the moderators.