[Dovecot] DKIM Verification failures

[Nikolaos Milas]

Hi,

-- This message refers to the maillist itself rather than to dovecot 
software --

I have noticed that when I post to this list (only), I get DKIM 
Verification failure reports from:

root at moncton.sidefx.com  (e.g. for my last post: "DKIM failure report 
for job 4D27B5DC4E on mail.sidefx.com")
root at mail.rmacd.com (e.g. for my last post: "DKIM failure report for job 
B69B3187F1 on mail.rmacd.com")
root at mx0.roessner-net.de (e.g. for my last post: "DKIM failure report 
for job 6103B52092 on mx0.roessner-net.de")

I have not had other DKIM failure reports from anywhere and I know that 
we should not have issues with it. An example from gmail:

Authentication-Results: mx.google.com; spf=pass (google.com: best guess 
record for domain of nmilas at noa.gr designates 195.251.204.235 as 
permitted sender) smtp.mail=nmilas at noa.gr; dkim=pass header.i=@noa.gr

So, whom should I contact to investigate this problem?

Thanks,
Nick