./mail/p5-Mail-SRS, SMTP envelope sender rewriting for SPF-compliant forwarding

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Branch: pkgsrc-2022Q4, Version: 0.31nb18, Package name: p5-Mail-SRS-0.31nb18, Maintainer: pkgsrc-users

The Sender Rewriting Scheme preserves .forward functionality in an
SPF-compliant world.

SPF requires the SMTP client IP to match the envelope sender
(return-path). When a message is forwarded through an intermediate
server, that intermediate server may need to rewrite the return-path to
remain SPF compliant. If the message bounces, that intermediate server
needs to validate the bounce and forward the bounce to the original
sender.

SRS provides a convention for return-path rewriting which allows
multiple forwarding servers to compact the return-path. SRS also
provides an authentication mechanism to ensure that purported bounces
are not arbitrarily forwarded.

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Filesize: 25.981 KB

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