Note: This is not a guide/how to.
Sending periodic cron mails using sendmail listening only on localhost 127.0.0.1:25 via smarthost TLS submission 587 from private server
Shipped sendmail version in base doesn't have SASL enabled which is required for auth so we need to use sendmail from pkg or build it manually from ports with SASL option which will install cyrus-sasl cyrus-sasl-saslauthd. There's no need to be enabled in /etc/rc.conf as we won't accept/listening for any outside connections.
If you don't have valid DNS/rDNS record for that host add it into /etc/hosts otherwise gethostbyaddr(3) will fail to resolve the hostname.
/etc/hosts
check for SASLv2
Check supported AUTH options
comment exposed user using dnl or delete the line. Otherwise we can't masquerade the domain name for that user and the periodic mails will be send as root@host.example.com instead of root@example.com
Forward all e-mails from root to user@example.com
This will create the FQDN .mc and .cf files also will build the aliases database and restart the sendmail.
refer to the /etc/mail/Makefile for detailed info. If you need to rebuild only the aliases.db then you can use newaliases(1)
or send to root
And for the postfix users:
all you need to do is to change
myorigin = $mydomain
For FreeBSD-14.0 the default MTA is DMA. The example configuration is:
/etc/mail/dma.conf
/etc/dma/auth.conf
Send a test message using:
The DMA spooler is in
/var/spool/dma
If you want to delete some stuck queue from the spooler you can delete it's content using:
Sending periodic cron mails using sendmail listening only on localhost 127.0.0.1:25 via smarthost TLS submission 587 from private server
Shipped sendmail version in base doesn't have SASL enabled which is required for auth so we need to use sendmail from pkg or build it manually from ports with SASL option which will install cyrus-sasl cyrus-sasl-saslauthd. There's no need to be enabled in /etc/rc.conf as we won't accept/listening for any outside connections.
If you don't have valid DNS/rDNS record for that host add it into /etc/hosts otherwise gethostbyaddr(3) will fail to resolve the hostname.
/etc/hosts
pkg install sendmail ca_root_nss
cp /usr/local/etc/mail/mailer.conf.sendmail /usr/local/etc/mail/mailer.conf
openssl dhparam -out /etc/mail/certs/dh.param 4096 service sendmail restartcheck for SASLv2
sendmail -d0.1 -bv rootCheck supported AUTH options
openssl s_client -connect smtp.example.com:587 -starttls smtp ee /etc/mail/authinfo
Code:
AuthInfo: "U:root" "I:user@example.com" "P:PASSWORD" makemap hash authinfo < authinfo
chmod 600 authinfo authinfo.db cp /usr/share/sendmail/cf/domain/generic.m4 /usr/share/sendmail/cf/domain/mydomain.m4
ee /usr/share/sendmail/cf/domain/mydomain.m4comment exposed user using dnl or delete the line. Otherwise we can't masquerade the domain name for that user and the periodic mails will be send as root@host.example.com instead of root@example.com
ee /etc/mail/freebsd.mcnote: MASQUERADE_DOMAIN should be (canonical domain name) $j reported from
sendmail -d0.1 -bv root this is the FQDN which we want to rename during outgoing e-mails.Forward all e-mails from root to user@example.com
ee /etc/mail/alises cd /etc/mail
make
make install
make aliases
service sendmail restartThis will create the FQDN .mc and .cf files also will build the aliases database and restart the sendmail.
refer to the /etc/mail/Makefile for detailed info. If you need to rebuild only the aliases.db then you can use newaliases(1)
echo "test mail" | mail -s "test mail" user@example.comor send to root
echo "test mail" | mail -s "test mail" rootAnd for the postfix users:
all you need to do is to change
myorigin = $mydomain
For FreeBSD-14.0 the default MTA is DMA. The example configuration is:
/etc/mail/dma.conf
Note: If your FQDN on your server match the domain name of the smarthost then use "NULLCLIENT" option in dma.conf
/etc/dma/auth.conf
Code:
user|smarthost.example.com:passwordSend a test message using:
The DMA spooler is in
/var/spool/dma
If you want to delete some stuck queue from the spooler you can delete it's content using:
rm /var/spool/dma/*.*
Last edited:
Info(6) senderhost dma[] 4321 trying remote delivery to receiverhost [rcv ipv6] pref 0
Error(3) senderhost dma[] 4321 remote delivery to receiverhost [rcv ipv6] failed after RCPT TO: 554 5.7.1 <unknown[sender ipv6]>: Client host rejected: Access denied