Having some issues to send mails using ssmtp

Question

Actually, I'm using a RaspberryPI 3b.
This is my /etc/ssmtp/ssmtp.conf:

root=gmail_user@gmail.com
mailhub=smtp.gmail.com:587
rewriteDomain=gmail.com
hostname=raspi
FromLineOverride=YES
UseTLS=Yes
UseSTARTTLS=YES
AuthUser=gmail_user
AuthPass=PASSWD

This is my /etc/ssmtp/revaliases:

root:gmail_user@gmail.com:smtp.gmail.com:587
pi:gmail_user@gmail.com:smtp.gmail.com:587

Trying to send a mail:

root@raspberrypi:~# echo "hola" | ssmtp filter.srv@gmail.com -v
[<-] 220 smtp.gmail.com ESMTP x129sm89284054wmg.44 - gsmtp
[->] EHLO raspi
[<-] 250 SMTPUTF8
[->] STARTTLS
[<-] 220 2.0.0 Ready to start TLS
[->] EHLO raspi
[<-]
ssmtp:  (raspi)

hostname:

root@raspberrypi:~# hostname
raspberrypi

This is a ping to google and the DNS servers that I'm using:

root@raspberrypi:~# ping 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=54 time=13.1 ms
^C
--- 8.8.8.8 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 13.134/13.134/13.134/0.000 ms
root@raspberrypi:~# cat /etc/resolv.conf
# Generated by resolvconf
nameserver 8.8.8.8
nameserver 8.8.4.4

Also...

the GMail account have the thing to let less secure applications use the account.
to make sure the name and password where correct, used copy/paste to google Chrome (Using SSH, so that I can copy/paste things)
I have a Debian server which works well, also trying to copy/paste all the configuration and change the names from users and hostname, but it didn't work.

score 2 · Accepted Answer · edited Oct 02 '19 at 14:31

I had the same problem (on PC-x64) after updating from 18.04 to 18.10. As some other unrelated things got broken, I updated to 19.04 and even zero-installed 19.10 (currently beta). Now everything else works, but SSMTP still broken. It may be needing an unlisted dependent SSL/TLS library or something like that.

Sadly, SSMTP is unmaintained and my searches turned up of no help too. After reading this question and the comments, I too gave up and installed MSMTP, which is supposed to be the actively maintained, basically following the instructions of that link:

Install (I am assuming you use a debian-related distro on your pi):

apt install msmtp msmtp-mta ca-certificates

Edit /etc/msmtprc and put that minimal config:

account default
auth on
tls on
tls_trust_file /etc/ssl/certs/ca-certificates.crt
logfile /var/log/mail.log
host     smtp.gmail.com
port     587
from     username@gmail.com
user     username@gmail.com
password plain-text-password

On the Ubuntu 19.10 beta I saw that the package installer added a user/group "msmtp", and made the binary SGUID, so, for security and homogeneity regarding permissions of the config and log file, I did the same on my other systems:

adduser --system --home /var/lib/msmtp --no-create-home --group msmtp
chown root:msmtp /etc/msmtprc
chmod 640 /etc/msmtprc
chown syslog:msmtp /var/log/mail.log
chmod 660 /var/log/mail.log

Try that, it has more features than SSMTP (like multiple accounts and user-specific ~/.msmtprc config) but continues to be simple to configure.

Having some issues to send mails using ssmtp

1 Answers1