We're struggling with out customer IT department rejecting non-RFC compliant emails (as a response to SMTP Smuggling) and CM WGS getting rejected for that reason.

The problem is that 95% of the error mails that the WGS sends include bare LF character which is prohibited according to the standard: RFC-5322 section 4.1

In case 02849433 we went through support and finally got them to replicate the issue, but Dev seems incapable to do so and is determined to have our case closed.

To prevent support having to purchase/trial and configure the Cisco Secure Email Gateway that the customer is using as a frontend for their Exchange environment, we had given support 2 ways of replicating the issue by examining Wireshark capture and provided a sample SMTP server to show the issue.

Support was able to replicate the issue, but Dev isn't, which is very frustrating as that means the issue isn't going to be resolved.

This is a problem that we experience in both CM 10.0 and CM 23.4, so I think it's save to say that all versions have the same issue.

The Wireshark capture:

The custom SMTP listener sample:

Is any of you also experiencing this issue or can you replicate the issue?

For our support duties, isn't very convenient in not having immediate notifications if any issues within the CM system occur.

We would like to have this resolved asap.

Due to the security issue, the IT security department isn't willing to change the SMTP configuration.

Any help is greatly appreciated in convincing OpenText to fix this!