[kwlug-disc] Email received with no email address in the to: line

[B. S.]

This is what I was running into with msmtp in the earlier thread.

Through this list's help I determined that that problem was gigo - I was 
assuming the facilities would cross-pollinate fields between envelope 
and message body, which turned out not to be the case. [Once I spotted 
that and started doing so, everything started working.]

Along the way I spotted what you describe when the envelope fields were 
present but not in the message body. e.g. Blank to: / from: / subject:", 
although one or more was present in the envelope (else how could the 
message have landed in the first place).

If using the gmail web page, you can see original then save as and see 
things missing from one or the other. Other email clients will have 
their own means of doing so. (Which, of course, you already know / are 
familiar with.)

The insidious nature of it all was revealed in that gmail was rejecting 
messages without a from: in the message body, but that from: could be 
empty. A prepending line of 'From:\n' in the message body was sufficient 
for it to let it through. The resulting email looked much as you describe.

If you want to demonstrate to yourself, assuming your sendmail (postfix 
/ mail / exim / msmtp / ssmtp / whatever) is successfully configured to 
send mail out of your system, 'echo -e "From:\nSubject:" | sendmail 
you at example.com' should do it.

[And nothing has to match (fields vs envelope) - but at least the 
you at example.com has to be correct for it to get to you.]

Start adding bits and you'll see the result look more and more normal. 
e.g. 'From: nobody at google.com\nTo: dictator at myworld.com\nSubject: Master 
plan.\n\nSome body text.'

The final solution was calling a command that properly populates both 
the envelope and message body fields. Some way or another.


On 04/10/2017 04:22 PM, Chamunks wrote:
> I'm wondering and if anyone else has had this before. The only reason I can
> think is that Gmail fetched an email from my new email server I setup using
> https://poste.io which is a docker runnable complete email solution with a
> proprietary panel on top of Foss software beneath it.