Relaying denied with vexira vamailarmor loaded on qmail

Hi,

I am using qmail on Red Hat Linux 8.0. I am using vexira antivirus
(vamailarmor) of centralcomman.com for qmail. Qmail without this
antivirus is ruuning fine. But with this antivirus installed when I am
trying to send mails to other domains from mydomain the following
error message is being generated

“Requested mail action aborted: exceeding storage allocation
Server replied: 552 Relaying denied for rcpt
suhitar@hotmail.com”
where suhitar@hotmail.com is the sender address.

Please help !!

Thanks
Suhita