Error message

• Warning: Cannot modify header information - headers already sent by (output started at /home/cbwyncmv/public_html/includes/bootstrap.inc:1692) in drupal_send_headers() (line 1551 of /home/cbwyncmv/public_html/includes/bootstrap.inc).
• Error: Call to undefined function each() in SMTP->Data() (line 393 of /home/cbwyncmv/public_html/sites/all/modules/contrib/smtp/smtp.transport.inc).