Warning: mail(): Multiple or malformed newlines found in additional_header in /u

When viewing a mail queue entry, such as a bounce or RBL and then attempting to use the 'Send this email to:' option presents the following error message upon clicking 'SEND'.

Code: [Select]

Warning: mail(): Multiple or malformed newlines found in additional_header in /usr/local/cwpsrv/htdocs/resources/admin/modules/mail_queue.php on line 0

Error while sending to: username@domainname.com
The choice of 'send to' e-mail address appears irreverent, as I've tried to send to many different addresses with varying domains, we only have a few bounces due to the inability to contact AT&T's postmaster, alas, I'd like to forward the generated emails to either myself or directly to the person with an alternate address, unfortunately I'm unable to.

Any idea what's causing this? Our Postfix configuration is working properly, we have a proper rDNS, hostname.domainname and such and we're currently not using the AV scanner to avoid further complications.

Any help would be great!

Note: We're on the latest version of CWP7pro (CWPpro version: 0.9.8.458), although this has occurred in prior version as well, most recently recorded in 0.9.8.444)


Thanks!