./mail/bulk_mailer, Assist in delivery of mail to large numbers of recipients

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Branch: pkgsrc-2020Q4, Version: 1.13nb1, Package name: bulk_mailer-1.13nb1, Maintainer: abs

bulk_mailer assists with "bulk" mailing, such as large majordomo
lists under sendmail. For input, it takes a file of recipient
addresses (one address per line) and a message (with headers already
attached) to be sent to the recipients. It sorts the recipient
list by reversed domain (so similar ones sort together), splits up
the recipients into several groups containing no more than N domains
each, creates an SMTP envelope for each group of recipients, and
feeds that envelope to "/usr/lib/sendmail -bs".

Splitting the envelopes up allows sendmail to perform delivery in
parallel, so instead of having one large queue entry (for which
sendmail might take awhile to get around to attempting delivery
for some recipients), it has several smaller queue entries.
Depending on your point-of-view, this can still be considered
"cluttering up your mail queue", but it does seem to deliver messages
more quickly to most recipients.

Master sites:

SHA1: 2886641461b6702affc4624456829b5944581a35
RMD160: fc4cc57d9d13429311e2d17ca4c51c95003246c4
Filesize: 34.037 KB

Version history: (Expand)