Could not send mail after updates in custombuild

[flexjoly]

Hi,

We could solve it, but how could this happen??

Yesterday we runned about 10 updates in custombuild and the latest yum updates (centos). This morning 2 clients reported that they could not send any mail. Testing it in roundcube, the error was: SMTP Error (-1): Connection to server failed.
In the logs we could find NOTHING

So we tried several things including: updating exim.conf in roundcube. That worked!!! ?
But how could this happen and how can we prevent this for the future??

Thanks in advance,
flexjoly

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The settings for custombuild are: (this is how custombuild shows it in the popup)

Nginx: 1.17.8
LibModSecurity: no
htscanner: no
Dovecot: 2.3.9.2
Dovecot configuration: yes
AWstats: 7.7
Exim: 4.93.0.4
exim.conf update: yes, release 4.5
BlockCracking: yes
Easy Spam Fighter: yes
SpamAssassin: 3.4.4
SpamAssassin rule updates: daily
ClamAV: 0.102.2
MariaDB: 10.0.38
MySQL backup: yes
MySQL backup directory: /usr/local/directadmin/custombuild/mysql_backups
MySQL compress backups: no
PHP (default): 7.1 as php-fpm
phpMyAdmin: 4.9.4-all-languages
ProFTPD: no
Pure-FTPd: 1.0.49
RoundCube webmail: 1.4.2
Replace "php.ini" with '/usr/local/directadmin/custombuild/build all' and '/usr/local/directadmin/custombuild/build php_ini': yes
Replace "php.ini" using type: production
Cron for notifications and (or) updates: yes
Cron frequency: daily
Run "clean" every time: yes
Run "clean_old_webapps" every time: yes
Run "clean_old_tarballs" every time: yes
Show texts in bold: yes
SquirrelMail: no
Zend Guard Loader: no
ionCube loader: no
Suhosin: no

 

[smtalk]

Maybe exim service was down? And "exim_conf" just restarted the service at the end

 

[flexjoly]

Hi smtalk,

We did check the service monitor, everything looked normal.
To be sure we restarted exim. We even rebooted the server. But that did not help.
Updating exim-conf did.

Well if no one else had this, then... we just hope it won't happen again ;-)

Greetz, flexjoly

 

[Magistar]

I have the same issue now after doing regular updates with custombuild. On one server I was able to fix using the exim build. Second server so far no luck, that one is also giving me imap failed.

 

[mentik_yusmantara]

Get same problem, being overwhelming to fix this problem.... try some method including "Config Server Security & Firewall" still not work
Here the code just resolved the issue

cd /usr/local/directadmin/custombuild
./build update
./build set exim yes
./build set eximconf yes
./build update
./build exim
./build exim_conf

thanks, for this post.