Should I use sendmail or postfix?

Should I use sendmail or postfix?

Sendmail is known for being inefficient compared to competitors. System admins complain about random problems often and generally install Postfix or Exim. Both are drop-in replacements for Sendmail and are almost equal in terms of reliability. However, Postfix is one step ahead thanks to its modular architecture.

What is sendmail configuration file?

Description. The /etc/mail/sendmail.cf configuration file and the /etc/mail/submit.cf configuration file contain the configuration information for the sendmail command. These files include information such as the host name and domain, and the sendmail rule sets.

How do I check my sendmail configuration?

Configure to receive email:

1. Backup the files /etc/mail/sendmail.mc and /etc/sendmail.cf.
2. Edit the file /etc/mail/sendmail.mc and change/comment the line: From: DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA’)

How is sendmail configured?

Edit the /etc/sendmail.mc file. Most of what you need to do to configure sendmail can be done by editing this file. Generate the sendmail.cf file from the edited sendmail.mc file. The m4 macros you use in the sendmail.mc file are different from the resulting settings in the sendmail.cf file.

What is difference between Sendmail and mailx?

mailx is mail client. It can compose emails and deliver them to local mail transfer agent (sendmail, postfix, etc) which does actual sending to remote addresses. It can view and edit local user mailbox file. sendmail is mail server.

What is the purpose of sendmail?

Sendmail is a server application that gives businesses a way to send email using the Simple Mail Transfer Protocol (SMTP). It’s typically installed on an email server on a dedicated machine that accepts outgoing email messages and then sends these messages to the defined recipient.

How do I change the sendmail port?

To configure sendmail daemon to listen on a different port(say 25000) than port 25, follow these steps.

1. Edit DaemonPortOptions line in /etc/mail/sendmail.cf:
2. Or edit /etc/services and change the smtp lines:
3. Stop and restart sendmail for the changes to take effect.
4. Verify the port that sendmail daemon is listening on:

What does sendmail do?

What is mailx and sendmail?

mailx is mail client. It can compose emails and deliver them to local mail transfer agent (sendmail, postfix, etc) which does actual sending to remote addresses. It can view and edit local user mailbox file. sendmail is mail server. It does actual communication with remote mail servers for sending and receiving emails.

Which is the main configuration file for sendmail?

The main configuration file for Sendmail is /etc/mail/sendmail.cf, which is not intended to be manually edited. Instead, make any configuration changes in the /etc/mail/sendmail.mc file. If you want Sendmail to relay email from other systems, change the following line in sendmail.mc : DAEMON_OPTIONS (`Port=smtp,Addr=127.0.0.1, Name=MTA’)dnl

How to configure Sendmail-SUSE Linux Enterprise Server?

Luckily, SUSE simplifies sendmail configuration by providing a graphical configuration mechanism in YaST. The YaST configuration module for sendmail and the shell scripts and configuration files that it uses were all installed automatically as part of SUSE’s sendmail package.

How to configure the sendmail.cf file?

The sendmail.mc file was created as a way to simplify the creation of the sendmail.cf file. So, the steps I recommend for configuring sendmail are as follows: Edit the /etc/sendmail.mc file. Most of what you need to do to configure sendmail can be done by editing this file.

How to configure Sendmail for specific users?

The confUSERDB_SPEC line sets the location of the user database (where you can override the default mail server for specific users). The confPRIVACY_FLAGS line causes sendmail to insist on certain mail protocols. For example, authwarnings causes X-Authentication-Warning headers to be used and noted in log files.