victor00000,
piyavking@piyavking-desktop:~$ ls -l `which mail`
lrwxrwxrwx 1 root root 22 Feb 28 04:14 /usr/bin/mail -> /etc/alternatives/mail
piyavking@piyavking-desktop:~$ ls -l /etc/alternatives/mail
lrwxrwxrwx 1 root root 23 Feb 28 04:14 /etc/alternatives/mail -> /usr/bin/mail.mailutils
piyavking@piyavking-desktop:~$ ls -l `which sendmail`
total 29328
-rw-rw-r-- 1 piyavking piyavking 15904 Feb 26 00:38 all.xml?mix=astronomy,geology,gyroscope,literature,marketing,mathematics,music,polit,agrobiologia,law,psychology,geography,physics,philosophy,chemistry,estetica
-rw-rw-r-- 1 piyavking piyavking 16733 Feb 27 14:09 all.xml?mix=astronomy,geology,gyroscope,literature,marketing,mathematics,music,polit,agrobiologia,law,psychology,geography,physics,philosophy,chemistry,estetica.1
-rw-rw-r-- 1 piyavking piyavking 16689 Feb 27 14:13 all.xml?mix=astronomy,geology,gyroscope,literature,marketing,mathematics,music,polit,agrobiologia,law,psychology,geography,physics,philosophy,chemistry,estetica.2
-rw-rw-r-- 1 piyavking piyavking 16116 Feb 27 14:18 all.xml?mix=astronomy,geology,gyroscope,literature,marketing,mathematics,music,polit,agrobiologia,law,psychology,geography,physics,philosophy,chemistry,estetica.3
drwxrwxr-x 2 piyavking piyavking 4096 Feb 24 17:50 Balabolka
-rw-rw-r-- 1 piyavking piyavking 20 Feb 28 20:40 dead.letter
-rw-rw-r-- 1 piyavking piyavking 111 Feb 28 02:14 dean.ldif
drwxr-xr-x 2 piyavking piyavking 4096 Feb 21 04:51 Desktop
drwxr-xr-x 4 piyavking piyavking 4096 Feb 25 00:30 Documents
drwxr-xr-x 7 piyavking piyavking 12288 Mar 1 21:00 Downloads
-rw-r--r-- 1 piyavking piyavking 8445 Feb 17 03:38 examples.desktop
drwxr-xr-x 3 piyavking piyavking 4096 Feb 23 00:00 images
drwxr-xr-x 5 piyavking piyavking 4096 Feb 25 00:30 Music
drwxrwxr-x 2 piyavking piyavking 4096 Mar 1 07:45 mymenu
drwxrwxr-x 3 piyavking piyavking 4096 Feb 28 22:00 myscripts
-rw-r--r-- 1 piyavking piyavking 29777290 Feb 25 19:13 nvidia-275-i386.deb
drwxr-xr-x 3 piyavking piyavking 49152 Mar 1 21:29 Pictures
-rw-rw-r-- 1 piyavking piyavking 47311 Feb 17 16:39 piyavking.png
drwxr-xr-x 2 piyavking piyavking 4096 Feb 17 08:56 Public
drwxr-xr-x 2 piyavking piyavking 4096 Feb 17 08:56 Templates
drwxr-xr-x 2 piyavking piyavking 4096 Mar 1 23:04 tmp
drwxr-xr-x 2 piyavking piyavking 4096 Feb 17 08:56 Videos
piyavking@piyavking-desktop:~$
Апдейт: всё наладил, всё работает. mailx надо было поставить и символьную ссылку usr/sbin/sendmail отредактировать, шобе вела к usr/sbin/ssmtp. Осталась эта досадная заноза с /run/user/piyavking/keyring-######/pkcs11. Она не мешает, но как-то нервирует.
Апдейт2: занозу с keyring вылечил добавлением
eval $(gnome-keyring-daemon --start) &
в автозагрузку (openbox). Помечаю тему решённой.