In message <2 .
Stan Ryckman <stanr @
> Spammers seem to be doing this somewhat more (omitting the "To:"
> header); however, since RFC 822 requires a To: field containing
> at least one address, it would seem reasonable to silently trash
> any posts lacking a To: header (no, don't bounce them--that would
> wake up the spammers!) sent to this (or any other) mailing list.
Unfortunately not, as RFC822 does not require a To: header. It says:
A.3.1. Minimum required
Date: 26 Aug 76 1429 EDT Date: 26 Aug 76 1429 EDT
From: Jones @
Org or From: Jones @
Bcc: To: Smith @
Note that the "Bcc" field may be empty, while the "To" field
is required to have at least one address.
Christopher Samuel, IT Vulnerabilities Group, chris @
N-115, Defence Research Agency, St Andrews Road, Great Malvern, England, UK
DISCLAIMER: I write only for myself, not for DRA. Phone: +44 1684 894644