Linux configuration -- ssmtp: Cannot open smtp.gmail.com:587
I encountered the same problem. The following steps worked for me:
- sudo vi /etc/ssmtp/ssmtp.conf Add the following:
TLS_CA_FILE=/etc/pki/tls/certs/ca-bundle.crt
[email protected]
mailhub=smtp.gmail.com:587
AuthUser=XXXX
AuthPass=XYXYX
UseSTARTTLS=Yes
UseTLS=Yes
hostname=AAAA
Replace: XXXX- username(mail) XYXYX- password(mail password) AAAA- hostname(get by running $hostname)
- sudo vi /etc/ssmtp/revaliases Add the following:
root:[email protected]:smtp.gmail.com:587
Replace : XXXX - username(mail)
Try running the mail now:
$mail -s "adasdas" [email protected]CC: XYZLoremIpsum . 'ctrl+D'
It solved my problem. Hopefully for a system(Office) you need to configure correct proxy settings otherwise you will get an error:
cannot send message: Process exited with a non-zero status
try changing this option
Allowing less secure apps to access your account
https://support.google.com/accounts/answer/6010255?hl=en
This is perhaps because you're not setting the hostname parameter of ssmtp.conf. It should be a resolvable, fully-qualified domain name; yours is defaulting to the machine name of ctmtest (as shown in the EHLO command that you quote above).
The issue that user963 mentions in their answer may also be in action here, but in that case you'll get a different error message, something like ssmtp: Authorization failed (534 5.7.14 ...).