Whenever I try to use sendmail to send email, the server hangs indefinitely and I am forced to restart the ssh session to be able to issue any commands. Even simply typing “sendmail” causes the server to hang.
I have taken the following steps to install send mail:
-
sudo apt-get install sendmail
-
I configured the hosts file at “nano /etc/hosts” by adding this as suggested by a another user in the help community: “127.0.0.1 localhost localhost.localdomain pedrogarcez”. So my hosts file looks like this:
Your system has configured ‘manage_etc_hosts’ as True.
As a result, if you wish for changes to this file to persist
then you will need to either
a.) make changes to the master file in /etc/cloud/templates/hosts.tmpl
b.) change or remove the value of ‘manage_etc_hosts’ in
/etc/cloud/cloud.cfg or cloud-config from user-data
127.0.1.1 pedrogarcez pedrogarcez 127.0.0.1 localhost 127.0.0.1 localhost localhost.localdomain pedrogarcez
The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters ff02::3 ip6-allhosts
- I ran the sendmail config using “sudo sendmailconfig” and answered ‘Y’ to everything.
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If sendmail is taking too long to send an email, try checking if port 25 is open on your Droplet. To do so, run the following command:
nc -vz smtp.gmail.com 25
If it returns a failure, please open a support ticket and the team will help you out. Otherwise, look at sendmail’s logs (usually located at /var/log/mail.log) and see if there’s anything there that could help you find out what’s wrong.
@ryanpq Im having the same issue, my hostfile looks like this:
Your system has configured ‘manage_etc_hosts’ as True.
As a result, if you wish for changes to this file to pers$
then you will need to either
a.) make changes to the master file in /etc/cloud/templat$
b.) change or remove the value of ‘manage_etc_hosts’ in
/etc/cloud/cloud.cfg or cloud-config from user-data
127.0.1.1 tinybird.localdomain tinybird 127.0.0.1 localhost
The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters ff02::3 ip6-allhosts
I looked in my log file, and this is what i saw:
$ sudo cat /var/log/mail.log Dec 11 05:47:27 tinybird sendmail[6216]: gethostbyaddr(162.243.158.185) failed: 1 Dec 11 05:47:27 tinybird sendmail[6216]: gethostbyaddr(10.12.0.5) failed: 1 Dec 11 05:47:27 tinybird sendmail[6216]: alias database /etc/mail/aliases rebuilt by colin Dec 11 05:47:27 tinybird sendmail[6216]: /etc/mail/aliases: 0 aliases, longest 0 bytes, 0 bytes total Dec 11 05:47:27 tinybird sm-mta[6300]: gethostbyaddr(162.243.158.185) failed: 1 Dec 11 05:47:27 tinybird sm-mta[6300]: gethostbyaddr(10.12.0.5) failed: 1 Dec 11 05:47:27 tinybird sm-mta[6302]: starting daemon (8.15.2): SMTP+queueing@00:10:00
Is anything being recorded in /var/log/mail.log when this occurs? Checking the logs and backtracking from any errors that are recorded is usually the best way to start troubleshooting an issue like this.