Category Archives: Sendmail
How to correct 554 5.7.1 : Relay access denied email errors, and prevent them in the future
Relay Accessed Denied is a common email error. It means that the server is not allowing an email to be sent to another mail server. The most common causes of this error are: The sender did not authenticate to the outgoing mail server The recipients server has determined the senders server to be a …
Sending mail from command line on Linux
If you need to sent a test email from a server via command line, you can use the following. This one uses PHP to send the email. Simply replace [email protected] with your own email address. php -r “mail(‘[email protected]’, ‘test’, ‘test’);” To send mail directly to the mail queue without the use of PHP, use …
Using telnet to test mail servers
Here’s a handy cheat sheet for testing mail accounts via telnet. The commands you need to type are in bold text POP3 telnet mail.yourdomain.com 110 Connects to the pop3 server user YourUsernameHere This submits your username to the server pass YourPasswordHere This submits your password to the server list This will list the emails …
Sendmail and Dovecot Combined for a Powerful Mail Server
Before we get into how to combine Sendmail and dovecot or why you would even want to do this, it’s important to understand what dovecot and Sendmail can do for you. Here’s an overview of both. Sendmail One of the most used Mail Transport Agents or MTAs, Sendmail is a program used to send email …
sendmail attachment size limit
To increase the attachment size limit in sendmail you have to locate and update the sendmail.cf file. It’s usually stored in: /etc/mail/sendmail.cf # maximum message size O MaxMessageSize=20000000 change it to what you want restart sendmail : service sendmail stop killall -9 sendmail service sendmail start
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