Eliminating spam attacks from Joomla 1.5.22 - Joomla! Forum - community, help and support

our website runs great on joomla 1.5.22. are, getting spam on page allows site visitors submit information such birthdays , announcements. submissions forwarded end via cloaked email account. so, while no spam on public site, our email box getting full 50 submissions per day. newbie looking simple solution! thank you

there many ways skin cat you, please describe how current page in question has been implemented? contact native joomla component or 3-rd party add-on?

btw, suggest update joomla 1.5.22 version 1.5.26. staying on version 1.5.22 akin inviting troubles security wise.