0004800: No DKIM signature with email sended from ActiveSync client - SOGo | BTS

ID	Project	Category	View Status	Date Submitted	Last Update

0004800	SOGo	ActiveSync	public	2019-08-25 18:32	2019-08-30 17:27

Reporter	Mati24	Assigned To	ludovic
Priority	normal	Severity	minor	Reproducibility	N/A
Status	closed	Resolution	no change required
Platform	Server	OS	Debian	OS Version	9
Product Version	4.0.8

Summary	0004800: No DKIM signature with email sended from ActiveSync client
Description	Hello, When I send an email from my phone with Nine client or the Windows 10 mail client, configured with Exchange ActiveSync method. Mails are refused from some domain because the email is not signed with DKIM. I have no problem using classic SMTP way. How can I get the best log for helping ? Thank you
Steps To Reproduce	Configure a client with ActiveSync method Send an email
Tags	No tags attached.

Mati24 2019-08-25 18:37 reporter ~0013707	Message receive : said: 550 0000005.7.5 DKIM unauthenticated mail is prohibited

Christian Mack 2019-08-26 13:49 developer ~0013711	SOGo sends emails via SMTP. Your SMTP server does DKIM signing! This has nothing to do with SOGo. Which SMTP server is used, is defined in your sogo.conf. If SOGoMailingMechanism = smtp; Then SOGoSMTPServer gives you the server used. If SOGoMailingMechanism = sendmail; Then you use a local installed program to send emails usually via local SMTP server (like sendmail, postfix or exim). In this case check that local configuration.

Mati24 2019-08-26 13:52 reporter ~0013712	The mechanism is set to smtp on localhost, so it use postfix. I don't understand why there is a difference, because it works well with webui

Christian Mack 2019-08-26 14:10 developer ~0013713	Ok, that is strange. Could you compare headers of an email send via SOGo webinterface and via ActiveSync?

Mati24 2019-08-26 14:23 reporter ~0013714	The only difference in is the Content-Type and Transfer Encoding : Nine with ActiveSync Content-Type: multipart/alternative; boundary=--_com.ninefolders.hd3.email_15409902954225_alt ----_com.ninefolders.hd3.email_15409902954225_alt Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: base64 SGVsbG8KVGhpcyBpcyBhIHRlc3QKCg== ----_com.ninefolders.hd3.email_15409902954225_alt Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: base64 ----_com.ninefolders.hd3.email_15409902954225_alt-- Web UI ------=_=-_OpenGroupware_org_NGMime-1532-1566828841.757671-0------ Content-Type: text/plain; charset=utf-8 Content-Length: 21 Hello This is a test ------=_=-_OpenGroupware_org_NGMime-1532-1566828841.757671-0------ Content-Type: text/html; charset=utf-8 Content-Length: 38 <html>Hello<br />This is a test</html> ------=_=-_OpenGroupware_org_NGMime-1532-1566828841.757671-0--------

Christian Mack 2019-08-26 14:37 developer ~0013715	Does that mean, that the "Received" entries are identical? If they are, then those emails take the same route through SMTP servers, and therefore should be equally DKIM signed.

Mati24 2019-08-26 15:04 reporter ~0013716	Yes, there is no problem in SOGo, sorry

Date Modified	Username	Field	Change
2019-08-25 18:32	Mati24	New Issue
2019-08-25 18:37	Mati24	Note Added: 0013707
2019-08-26 13:49	Christian Mack	Note Added: 0013711
2019-08-26 13:52	Mati24	Note Added: 0013712
2019-08-26 14:10	Christian Mack	Note Added: 0013713
2019-08-26 14:23	Mati24	Note Added: 0013714
2019-08-26 14:37	Christian Mack	Note Added: 0013715
2019-08-26 15:04	Mati24	Note Added: 0013716
2019-08-30 17:27	ludovic	Status	new => closed
2019-08-30 17:27	ludovic	Assigned To	=> ludovic
2019-08-30 17:27	ludovic	Resolution	open => no change required