[exim] DKIM header issues

Hi everyone,


I have setup and validated a DNS record for dkim, and now I am trying to sign emails.

I am using Swiftmail in php to send mails, this normally works fine.

However when I sign the mail header the mail is not sent and I find this in exim's main log:


SMTP connection from localhost (lltb.puck-it-dev.nl) [::1] lost while reading message data (header)


I have tried some solutions related to Swiftmailer that worked for others, but they did not work for me.

So I thought maybe this is an exim issue?