On Thu, 1 Feb 2024, Scott Undercofler via mailop wrote:
I'm replying on list for visibility. The issue you’re seeing is
directly related to SMTP smuggling which was discussed on list ad
nauseam about a month ago. The servers at shaw are configured to
reject non-RFC bare linefeeds. Can you elaborate on why you’re
sending them as they are not allowed.
On Feb 1, 2024, at 5:52 PM, Hugh E Cruickshank via mailop <mailop@mailop.org>
wrote:
We are experiencing a problem with mail delivery to Shaw.ca. Since
January 18th messages have been bounced with: 552 5.2.0 Message contains
bare CR and is violating 822.bis section 2.3. We have tried to contact
postmas...@shaw.ca but have not received any response yet. I was
wondering if there was anyone on this list who could provide a support
contact at shaw.ca that might be able assist us with identifying and
correcting this issue.
If Hugh's problem is indeed bare linefeeds, your bounce message may be
leading him astray by suggesting he has sent bare carriage-returns.
--
Andrew C. Aitchison Kendal, UK
and...@aitchison.me.uk_______________________________________________
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