Richard Heyes wrote: >> Whether you BCC or not does not affect the actual mail-server >> traffic. A Bcc'ed address is only one that isn't listed in To: >> header. > > But it does affect how much data gets transferred to the mail server. > If you Bcc: addresses the email will only be sent over the wire to the > mail server once.
It depends on your setup and what "the wire" is. Delivering an email with 1000 bcc'ed addresses: - if you're delivering an email to your localhost MTA using sendmail with 1000 bcc'ed addresses, nothing goes over the wire, the file is just dropped into the filesystem. The mailserver will typically order the addresses by domain, and attempt to deliver "over the wire" with multiple recipients per domain. - if you're delivering an email to a remote MTA using SMTP, the email _could_ be transmitted only once - assuming the remote MTA can accept all 1000 recipients in one transaction. /Per Jessen, Zürich -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
