For EuMX users: nasty bug in W10 Mail app

Berenburger · 30 Aug 2015, 08:03 AM

I've ran into this nasty bug in the new Windows 10 mail app. It affects at least EuMX.

Quote:

The Windows 10 Email app seems to have a problem with IMAP e-mail. Under Windows 8/8.1, when creating an account one had to enter an e-mail address and a username/password. Under Windows 10 a an account name - which can be a random text string - and a username/password are requested. The username can be an e-mail address or a domain username or something else depending on whether it used in a work envirnment, or whatever account username format is expected by the ISP.
A network packet capture on the sending computer during a failed send attempt shows that the Windows 10 Email app uses the username parameter to BOTH log in to the IMAP server and as the 'mail from' address in the SMTP transaction. If the username is not specified as an e-mail address, sending e-mail won't work, although receiving e-mail will work if the username/password is specified correctly.

EuMX uses an username that is not an email address.

Full thread here.
Same problem here. [EDIT] Removed link to avoid confusion. Is not exactly the same problem. [/EDIT]

fabule · 31 Aug 2015, 06:22 AM

We can't fix that issue in Windows 10, but we can ignore domain part during IMAP logins. We have applied a fix. Please let us know if you still have issues with it.

Quote:

Originally Posted by Berenburger

I've ran into this nasty bug in the new Windows 10 mail app. It affects at least EuMX.

EuMX uses an username that is not an email address.

Full thread here.
Same problem here.

Berenburger · 31 Aug 2015, 08:26 AM

Quote:

Originally Posted by fabule

We can't fix that issue in Windows 10, but we can ignore domain part during IMAP logins. We have applied a fix. Please let us know if you still have issues with it.

Yes. If I understand correctly, the problem is when sending (SMTP). It needs a username as an email address. Incoming mail (IMAP) is no problem.

jdtaylor · 1 Sep 2015, 12:23 AM

Try using the advanced option for mutiple account types, in there you can choose the mail server, username and password etc. all the settings I think you need to set are under a different option in small print on that add account dialog box.

Berenburger · 1 Sep 2015, 05:36 AM

Quote:

Originally Posted by jdtaylor

Try using the advanced option for mutiple account types, in there you can choose the mail server, username and password etc. all the settings I think you need to set are under a different option in small print on that add account dialog box.

Thank you jdtaylor. That did the trick.

Here my special settings:

Incoming mail server: ssl.eumx.net
Outgoing (SMTP) mail server: ssl.eumx.net:465:1
Use the same user name and password for sending mail: NOT checked.
Username for outgoing mail server: login name without @tld.

See, for the clarification the screen shot (sorry Dutch).

jdtaylor · 3 Sep 2015, 01:24 AM

You do need to enable smtp authentication to use the eumx server as otherwise emails will bounce, if I'm correct here.

Berenburger · 3 Sep 2015, 08:04 AM

Quote:

Originally Posted by jdtaylor

You do need to enable smtp authentication to use the eumx server as otherwise emails will bounce, if I'm correct here.

Yes, it is the blue checkmark in the screenshot.

1 Sep 2015, 12:23 AM	#4
jdtaylor Master of the @ Join Date: Sep 2004 Posts: 1,693	Try using the advanced option for mutiple account types, in there you can choose the mail server, username and password etc. all the settings I think you need to set are under a different option in small print on that add account dialog box.

3 Sep 2015, 01:24 AM	#6
jdtaylor Master of the @ Join Date: Sep 2004 Posts: 1,693	You do need to enable smtp authentication to use the eumx server as otherwise emails will bounce, if I'm correct here.