@vipin the UVDesk version is v1.1.0 and am using office365 email service.

@peopleinside the issue was resolved by commenting out the code block in the function, assertValidAddress() located inside
vendor/swiftmailer/swiftmailer/lib/classes/Swift/Mime/Headers/MailboxHeader.php

I do not know if what I did is the right way to go about it but it works for me and I wish to share it with the group.

Here is the screenshot of the code block in the function that was commented out.

@peopleinside I have received a response from the support them. We are still on it. I will update you when everything is sorted out.

Thanks.

@peopleinside Sure I will keep you updated. Thanks.

@peopleinside I have sent the ticket using the support link.

Thanks.

@peopleinside No please, there were no special characters before or after the @ sign.

@peopleinside Thanks very much for your continued support. I have tried with php8.1 but still experiencing the same issue.

Address in mailbox given [email] does not comply with RFC 2822, 3.6.2.

@peopleinside Thanks. I will try with php8 and get back.

@peopleinside Thank you very much for your response. I have changed to prod. mode and cleared cache.
However, when I tried again, I get the same error. But this time with an error page.
In the image below.

The version of PHP am using is 7.4
And UVdesk stable V1.1.0

I have successfully configured the community version of UVdesk. But whenever I create a ticket, it displays this error.

Address in mailbox given [email] does not comply with RFC 2822, 3.6.2.

Even though this error displays, the ticket email gets delivered to the recipient, and the ticket is as well created.

Please how do I prevent this error from displaying? Your assistance is much appreciated.

Attached is a screenshot of the error message.

Thanks.