[Koha-devel] Sending email on behalf of customers

[Marcel de Rooy]

As a workaround: Use real library email address in ReplyToDefault and ReturnpathDefault.
Use the real server domain in the From address like library@[yourserver]
Should cover most cases. As a fallback, autoforward eventual replies at the From address to the library. (Now you are only "in offense" here..)

-----Oorspronkelijk bericht-----
Van: koha-devel-bounces at lists.koha-community.org [mailto:koha-devel-bounces at lists.koha-community.org] Namens Magnus Enger
Verzonden: maandag 13 februari 2017 11:36
Aan: koha-devel at lists.koha-community.org
Onderwerp: [Koha-devel] Sending email on behalf of customers

Hi!

I run Koha for several customers, and a number of them have email enabled. The sender of these emails is set to be the email of the library in question, e.g. library at example.org.

Now, the problem is that services like GMail and Hotmail are not accepting these emails, because they see them as non-legitimate, in the sense that they are sent from some random server somewhere on the internet, that is not in any way associated with example.org.

And they are right, of course! I *am* sending email on behalf of libraries from some random server on the internet. So, the question
is: how to get around this? I see two possibilities:

1. Work with the sysadmins of the organizations of each library and have them include my servers in their "published lists of trusted servers" (I am thinking of stuff like SPF, PTR, OpenDKIM etc - I have not gotten my head around all of the details.) This would entail talking to lots of different sysadmins (if there is one) at lots of different organizations = lots of work...

2. So I was thinking about a second optoin - paying my way out, through some service like the ones listed here:
https://zapier.com/learn/email-marketing/best-transactional-email-sending-services/
My thinking is that GMail and Hotmail would "think" like "hm, this email says it comes from example.org, but it originated from some random server. BUT it was sent through ServiceX, which you have to pay to use, so it is probably legit". But I have no idea if GMail and Hotmail works like that at all. Does anyone else have a clue about this? Or some other way to solve the problem?

Best regards,
Magnus Enger
Libriotech
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