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Diffstat (limited to 'mail/p5-Mail-SRS/DESCR')
| -rw-r--r-- | mail/p5-Mail-SRS/DESCR | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/mail/p5-Mail-SRS/DESCR b/mail/p5-Mail-SRS/DESCR new file mode 100644 index 00000000000..81f26306e40 --- /dev/null +++ b/mail/p5-Mail-SRS/DESCR @@ -0,0 +1,14 @@ +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. |