Carlos E. R. wrote:
You are subscribed with three addresses - opensuse.org, gmx.es and telefonica.
Yes, that's what Sasi said.
Oh, I must have missed his reply.
email@example.com is my ISP, and firstname.lastname@example.org redirects to my ISP. That would be the duplicates, yes.
But I do not see any references to "email@example.com" or the redirection, I have no way to know which is which. That's the problem.
Your opensuse.org address is mapped to your telefonica address. The map just says "deliver carlos@opensuse to carlos@telefonica". That mapping is not logged or recorded anywhere.
Looking at my procmail recipe, the difference was:
* ^Original-Recipient: rfc822;(firstname.lastname@example.orgemail@example.com)
Based on the groupwise reference, I guess this stems back to when SUSE was owned by Novell?
but now there is none. Different path, but no reference to the alias. I had not noticed this issue, but it has been there for some time.
Probably since August 2020 when we switched over to our own mailservers.
I also have a few aliases delivered to my account "firstname.lastname@example.org". To distinguish them, to direct them into separate local accounts, I use an extension -
per@address1 -> email@example.com per@address2 -> firstname.lastname@example.org per@address3 -> email@example.com etc