Hello Edgar,

thanks for getting back. The interesting part, I've never seen this
mail/question actually make it to this list.

I have posted a follow up message, that I also have not seen make it to
the list, where the problem has been marked as solved. 

It turned out to me initially misreading the logs and to be a fetchmail
problem, as a means to test inbound functionality after successfully
using telnet, in that the newer fetchmail version needs the
"dropdelivered" argument, that has never been needed on the (admitedly
rather) old install. 

The problem occured not only with opensmtpd, but also with postfix,
that I temporarily switched back in trying to to avoid larger damage,
after all these mails have been bounced from my non legit mta. 

As precaution, I did block the way out to our smarhost, but
of course the line for outgoing mails was commented out. Bad night. 

Without this fetchmail option, both mta refused to accept any mails
handed over by fetchmail and in turn ran into a loop, that caused all
that bouncing. I have to admit to not yet really having understood
the issue. 
But it works now as expected and I am currently fighting strange
outbound behaviour, that has been the reason for deactivating the
outbound command in first place. But that'll be a different issue. 


Am Sat, 5 Oct 2019 17:45:03 -0500
schrieb Edgar Pettijohn <ed...@pettijohn-web.com>:

> > > 
> > > Accepting mails for user known to the system works, but what I
> > > haven't though about, are mailing lists. And probably, also mails
> > > to be recieved in
> > > [B]CC could be affected.
> > > 
> > > As those are not directly adressed to any account known to the
> > > system, but
> > > f.e "misc@opensmtpd.org", opensmtpd rejects them with an "550
> > > Invalid recipient"
> sounds like a good response to me
> > > 
> > > That is a problem I have currently no idea on how to deal with
> > > this.
> > > 
> I don't understand how not accepting mails that you have no user to
> accept is a problem. 
> > > Any insides?
> > > 
> I think you need to provide more information about what you want to
> happen and what is happening.
> > > Thanks again
> > > 
> > > Thanks Ede
> >
> Edgar 

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