MailServerSMTPStream

Server replied: 111 Can't open SMTP stream.

You've either configured SquirrelMail badly and specified an SMTP server which doesn't exist, or the SMTP server is down.

Mis-configuration

• Either run SquirrelMail-configuration again and specify an SMTP server that exists (option 2 on the main menu)

• Edit the SquirrelMail config.php file, on linux this would be, from the terminal, sudo nano /etc/squirrelmail/config.php

SMTP Server down

• Restart the SMTP server- with postfix this would be sudo postfix stop and sudo postfix start