New to Mutt, unable to send messages in *any* attempted way

[xtec at trimaso.com.mx]

Thanks again.

As mentioned in first message, system has Postfix by default, with its 
corresponding /usr/sbin/sendmail and /etc/postfix/main.cf .
Since I don't have anything for $sendmail variable, it's defaulting 
indeed for Postix sendmail.



On Thu, May 05, 2022 at 19:19:45 -0500, Cameron Simpson wrote:
> Might be. It won't be a "real" Message-ID line as it looks like the log
> tries to include the username of the user who sent the email.
> 
> However, you're using SMTP to smtp.domain.tld, which means you're not
> using the local mail system, which means that it should not be logging
> locally for email you send using mutt.
> 
Sorry... By "log" here I meant the default ~/sent one, default set for 
$record variable



> No, it is just what gets written into the heder line so that people 
> know
> what address to use for replies and citations.
> 
Then how do I know the email is really being sent from  user at domain.tld 
's account/SMTP?



> Mutt has some debug flags. Try using the "-d 5" option.
> 
Got: "DEBUG was not defined during compilation.  Ignored."
Any other ways to tell whether email is really being sent with STARTTLS?



On Thu, May 05, 2022 at 23:06:15 -0500, Nathan Stratton Treadway wrote:
> Some ISPs specifically block outgoing traffic on TCP port 25 (which is
> the default port for "smtp:" traffic)
> 
Which means, if not specifying port then Mutt (or Postfix?) takes port 
25 as SMTP default...
Wasn't/shouldn't port 587 the new default for SMTP?
So Heirloom Mailx also takes port 25 as default?



Also, some more doubts aroused:

---If adding the "-n" option to whole email sending command, it does 
*nothing*, just immediately getting an exit status of '1'. What's 
happening with this?

---Where in the manual can I find the meaning of each of the %Z letters 
here http://www.mutt.org/doc/manual/#index-format ? I mean, the letters 
norON, DdSPsK...

---When browsing emails in Mutt, why do sizes inside () -for example, 
(1.1K)- change to something different and smaller -( 6)- when hitting 
enter to display the message?



Thanks again.