Wrong email format sales order

[itsmeit268]

Preconditions
Magento version 2.2.4

Steps to reproduce
I updated version 2.1.1 to 2.2.4. I have an error with the email sales order.
Email config sales in my admin is sales@croftonline.co.uk, When the customer sends the order, the server sends the email they receive the email with the ip address and host name as the attachment. (I only get errors with sales order emails).

Expected result
send email correct format

Actual result

[magento-engcom-team]

Hi @dv-denda. Thank you for your report.
To help us process this issue please make sure that you provided the following information:

• Summary of the issue
• Information on your environment
• Steps to reproduce
• Expected and actual results

Please make sure that the issue is reproducible on the vanilla Magento instance following Steps to reproduce. To deploy vanilla Magento instance on our environment, please, add a comment to the issue:

@magento-engcom-team give me {$VERSION} instance

where {$VERSION} is version tags (starting from 2.2.0+) or develop branches (2.2-develop +).
For more details, please, review the Magento Contributor Assistant documentation.

@dv-denda do you confirm that you was able to reproduce the issue on vanilla Magento instance following steps to reproduce?

• yes
• no

[itsmeit268]

I have fixed it

[DanielRuf]

I have fixed it

Please let us know how you fixed it.

[itsmeit268]

@versdivers has fixed it on: 6e2fc05

[versdivers]

@dv-denda thats not the whole solution.
#16356 (comment)
this is :D