CN>> Is there any software that has issues with messages having a MSGID CN>> like CN>> string@z:r/n.p serialno CN>> ?
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CN> So it seems that using this type of origaddr's in echomail does not break CN> anything.
Even if it did break any software, let it break. There was never a promise, that the origaddr always will be in the form 1:2/3(.0).
I still don't understand the reasoning and advantages of "string@z:r/n.p". Why would one want to use an invalid FTN address in the MSGID, if the message is originating in an FTN?