An error occurred while sending an email: 'Method not found: 'MimeKit.MimeEntity MimeKit.AttachmentCollection.Add(System.String, System.IO.Stream)'.'

[ericrrichards]

Describe the bug

I have another library that I am using that depends on MailKit/MimeKit 3.1.0, and if I include that library, the OrchardCore.Cms.Email feature stops working. All attempts to send emails through the ISmtpService generate this error:

An error occurred while sending an email: 'Method not found: 'MimeKit.MimeEntity MimeKit.AttachmentCollection.Add(System.String, System.IO.Stream)'.'

To Reproduce

Steps to reproduce the behavior:

1. Include MailKit 3.1.0 and MimeKit 3.1.0 in an OrchardCMS project

2. Enable and configure the Email feature

3. Go to 'https://localhost/Admin/Email/Index'

4. Click on 'Test Settings'

5. Fill out the form to send a basic email with recipient, subject and body

6. See error

7. Remove references to MailKit 3.1.0 and MimeKit 3.1.0

8. Rerun steps 3,4,5

9. Mail is sent successfully

[hishamco]

Why you need to reference MailKit and MimeKit, OC.Email.Module is already referenced them

[ericrrichards]

I am using other non-orchard code that has a dependency on newer versions of MailKit. This is the simplest reproduction that exhibits the same behavior.

…

On Tue, Feb 22, 2022 at 12:29 PM Hisham Bin Ateya ***@***.***> wrote: Why you need to reference MailKit and MimeKit, OC.Email.Module is already referenced them — Reply to this email directly, view it on GitHub <#11245 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAVISTPTALFRORKVEFQTQODU4PBYRANCNFSM5PB4UKHQ> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>. You are receiving this because you authored the thread.Message ID: ***@***.***>

[hishamco]

I will bumb the versions ...

[hishamco]

Seems @agriffard already updated the versions here, so please use the nightly builds