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FastMail Forum All posts relating to FastMail.FM should go here: suggestions, comments, requests for help, complaints, technical issues etc. |
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1 Sep 2011, 08:00 PM | #1 |
Essential Contributor
Join Date: Jun 2009
Posts: 340
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Gmail shows "via" link
I notice that when I send an email to my gmail account, that Google shows it as:
myname@mydomain.com via messagingengine.com When I send from myusername@fastmail.fm this "via" doesn't show up. This suggests somewhat that the sender is not who he says he is. In a sense that is obvious, as you can you use the FastMail SMTP server to send from any email address, but on the other hand, mydomain.com has its MX records pointing to FastMail, so FastMail could give a bit more "reassurance". Or perhaps FastMail should have an option to verify personalities, in order to be able to give "reassurance". Note that I am not completely sure how the reassurance should be given, but it seems something is possible as the fastmail.fm domain doesn't have this "problem". |
1 Sep 2011, 08:16 PM | #2 |
Cornerstone of the Community
Join Date: Apr 2004
Location: Melbourne
Posts: 971
Representative of:
Fastmail.fm |
All messages from FastMail are signed with our DKIM key (messagingengine.com). Unfortunately, GMail has decided to equate the DKIM domain with the from address (something it was never intended to do) and show a "via X" label whenever the two are different. They seem to have whitelisted internally all our public domains, but obviously this doesn't work for custom domains. We are working on automatically creating and publishing DKIM keys for custom domains which are hosted with us, so that we can sign the messages with a key corresponding to the domain and thus avoid this problem.
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1 Sep 2011, 09:12 PM | #3 |
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Join Date: Jun 2009
Posts: 340
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Thanks for the clear response. Signing with the DKIM key for a FastMail hosted domain only when the email address has been verified (ie that it forwards to the FastMail user) might make sense as well.
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2 Sep 2011, 02:07 AM | #4 |
Cornerstone of the Community
Join Date: Apr 2004
Location: Melbourne
Posts: 971
Representative of:
Fastmail.fm |
Yes, we will only sign messages from domain X when sent from the user account that owns domain X.
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2 Sep 2011, 02:48 AM | #5 |
Essential Contributor
Join Date: Jun 2009
Posts: 340
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If domain X is FastMail hosted and the address anotherfmuser@X forwards to another FastMail user, then this user (who doesn't own domain X) should be able to send signed email from anotherfmuser@X, right?
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2 Sep 2011, 02:51 AM | #6 |
Essential Contributor
Join Date: Jun 2009
Posts: 340
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Also, do you know how Google handles this for their Google Apps users? Do they publish DKIM keys for their customers domains and sign the messages with these keys?
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2 Sep 2011, 06:01 AM | #7 | |
Essential Contributor
Join Date: Apr 2010
Posts: 490
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Quote:
http://www.google.com/support/a/bin/...?answer=174124 Paul |
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2 Oct 2020, 01:42 AM | #8 | |
Junior Member
Join Date: Oct 2020
Posts: 1
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Quote:
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