Does your script exit with 0 ?

March 5, 2024 10:49 AM, "Simon Hoffmann" <> wrote:

> Hey list, 
> in my virtual users file, I have specified an external script additionally to
> delivery to mailboxes. 
> emerge...@domain.tld user1,user2,|/etc/smtpd/
> Local delivery to the mailboxes works fine. 
> The script itself is called as well as I do receive the SMS message.
> However, OpenSMTPd says "MDA exited prematurely" after calling the script, 
> thus
> leading to a TEMPFAIL and OpenSMTPd trying again periodically. 
> The only thing I could find was the following message:
> qoute:
> mda is basically a program that reads input from stdin and exits with the
> proper status to report to the mta that delivery was successful, whatever
> happens in between is up to you.
> The script consists of a static curl call at the moment, that 
> performs a
> HTTP Get call to the SMS Gateway with the static text "new emergency mail 
> received".
> I am not yet parsing sender/subject etc.
> The curl call / the SMS gateway responds with "OK" if the SMS was queued 
> correctly on
> the SMS gateway. At first I thought that this "OK" back to stdout would 
> confuse
> OpenSMTPd, so I catch the stdout of the curl call to a variable and just 
> "exit 0" if
> the content of the variable is "OK". 
> However, this is still not working, OpenSMTPd still complains "MDA exited
> prematurely"
> Then I tried an "echo 250 OK". Still not working. 
> Then 250 2.6.0 Message accepted, still not working. 
> Sadly, I could find nothing on the man pages as to which exit codes OpenSMTPd 
> expects
> from an mda script. Additionally, based on the documentation available, I am 
> not sure
> if OpenSMTPd just pipes the whole message into stdin or if OpenSMTPd expects 
> some
> form of "smtp communication" (MAIL FROM + response, RCPT TO + response, ....) 
> and
> thus comlains that my script exits prematurely because I have not implemented
> that. 
> So, long story short: how shall I modify my script so that OpenSMTPd 
> recognises that
> the SMS Gateway received the call and has queued the SMS?
> Thanks!
> Cheers, 
> Simon

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