#Serialmailer faq password

modular password checking (via checkpassword).User-controlled program delivery: procmail etc.User-controlled address hierarchy–fred controls fred-anything mbox delivery.Delivered-To–automatic loop prevention, even across hosts.VERPs–automatic recipient identification for mailing list bounces.Mailing list owners–automatically divert bounces and vacation messages.Sendmail /etc/aliases compatibility (via fastforward).Hashed forwarding databases (via fastforward).Passive SMTP queue–perfect for SLIP/PPP.Artificial routing–smarthost, localnet, mailertable.HCMSSC support–language-independent RFC 1893 error codes.QSBMF bounce messages–both machine-readable and human-readable.Detailed delivery statistics (via qmailanalog).Automatic safe queueing–no loss of mail if system crashes.Quadratic retry schedule–old messages tried less often.Split queue directory–no slowdown when queue gets big.Instant handling of messages added to queue.Efficient – performing up to 20 deliveries simultaneously, by default.Optional RBL/ORBS support (via rblsmtpd).Relaying and message rewriting for authorized clients.Refusal of connections from known abusers (via ucspi-tcp).Automatic recognition of local IP addresses.No interference between relay control and aliases.Relay control–stops unauthorized relaying by outsiders.RFC 931/1413/ident/TAP callback–can help track spammers/forgers.Header line length limited only by memory.Sendmail command for compatibility with current user agents. Automatic conversion of old-style address lists to RFC 822 format.Optional logging of one-way message hashes, entire message contents, etc.Five-way trust partitioning–security in depth.Clear separation between addresses, files, and programs.

Serialmailer faq