gmail_as_a_relay_on_linux
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| gmail_as_a_relay_on_linux [2015/11/04 18:24] – juckins | gmail_as_a_relay_on_linux [2020/09/30 16:15] – juckins | ||
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| - | Directions [[http:// | + | ===== Using Gmail as a Relay on CentOS Linux ===== |
| - | 1. Make a backup copy of /etc/postfix/main.cf | + | Required packages if CentOS6 6.7: \\ |
| + | * postfix | ||
| + | * ca-certificates.noarch (tested version 2015.2.4-65.0.1.el6_6) | ||
| - | 2. Edit / | + | Required packages if CentOS7 7.2.1511: \\ |
| + | * postfix (tested version 2.10.1-6.el7 ) | ||
| + | * ca-certificates.noarch (tested version 2015.2.4-70.0.el7_1) | ||
| + | * cyrus-sasl-plain (tested version 2015.2.6-70.1.el7_2) | ||
| + | * Got hint that this is needed from [[http:// | ||
| + | * cyrus-sasl-lib (tested version 2.1.26-20.el7_2) | ||
| + | |||
| + | Other CentOS 7 Notes: | ||
| + | * Best to use this version of mutt: mutt-1.6.2-1.fc22.x86_64.rpm | ||
| + | * Otherwise, you may get errors like: Bad IDN in " | ||
| + | * / | ||
| + | * As root, run ' | ||
| + | * If trouble sending after install, may need to consult [[http:// | ||
| + | |||
| + | Directions [[http:// | ||
| + | |||
| + | 1. If installed, make sure / | ||
| + | |||
| + | 2. Make a backup copy of / | ||
| + | |||
| + | 3. Edit / | ||
| < | < | ||
| Line 9: | Line 31: | ||
| relayhost = [smtp.gmail.com]: | relayhost = [smtp.gmail.com]: | ||
| - | # use tls | + | # use tls |
| smtp_use_tls=yes | smtp_use_tls=yes | ||
| Line 18: | Line 40: | ||
| smtp_sasl_password_maps = hash:/ | smtp_sasl_password_maps = hash:/ | ||
| + | # This section SHOULD be configured properly in CentOS8 by default | ||
| # list of CAs to trust when verifying server certificate | # list of CAs to trust when verifying server certificate | ||
| # | # | ||
| Line 31: | Line 54: | ||
| </ | </ | ||
| - | 2. Add your own Gmail credentials to / | + | 4. Add your own Gmail credentials to / |
| < | < | ||
| [smtp.gmail.com]: | [smtp.gmail.com]: | ||
| </ | </ | ||
| - | 3. Run the following as root: \\ | + | 5. Run the following as root: \\ |
| < | < | ||
| # postmap / | # postmap / | ||
| </ | </ | ||
| - | 4. Make sure the / | + | 6. Make sure the / |
| < | < | ||
| # chown postfix sasl_passwd* | # chown postfix sasl_passwd* | ||
| </ | </ | ||
| - | 5. Tighten permissions: | + | 7. Tighten permissions: |
| < | < | ||
| # chmod 600 sasl_passwd sasl_passwd.db | # chmod 600 sasl_passwd sasl_passwd.db | ||
| </ | </ | ||
| - | 6. Restart postfix: \\ | + | 8. Restart postfix: \\ |
| + | < | ||
| + | # / | ||
| + | </ | ||
| + | or | ||
| < | < | ||
| # / | # / | ||
| Line 60: | Line 87: | ||
| </ | </ | ||
| - | 7. Send a test message: \\ | + | 9. Edit ~/.muttrc for each user as appropriate: |
| - | < | + | |
| - | echo 'It works' | mailx -s 'Test message' | + | |
| - | </ | + | |
| - | + | ||
| - | 8. Edit ~/.muttrc for each user as appropriate: | + | |
| < | < | ||
| Line 71: | Line 93: | ||
| #set from = username@HOSTNAME_OR_ALIAS.domain | #set from = username@HOSTNAME_OR_ALIAS.domain | ||
| #set realname=" | #set realname=" | ||
| - | set realname=$USER@$HOSTNAME | + | set realname="$USER@$HOSTNAME" (works in CENTOS7, mutt-1.5.21-26.el7.x86_64 but *not* via cron sending) |
| + | |||
| + | </ | ||
| + | |||
| + | 10. Send a test message: \\ | ||
| + | < | ||
| + | mutt -s " | ||
| + | </ | ||
| + | or to send a message without using a separate file: | ||
| + | < | ||
| + | echo 'It works' | mailx -s 'Test message' | ||
| </ | </ | ||
gmail_as_a_relay_on_linux.txt · Last modified: 2024/01/01 12:40 by juckins