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tag: remote server


SMTP Errors – 550 vs 450

Well I got a lesson in properly configuring your e-mail server’s error messages. Since setting up postfix as a anti-spam and anti-virus gateway for my exchange system (see my article Postfix as proxy to exchange server), I had left the option soft_bounce = yes enabled in my postfix configuration. This worked fine for months. However, […]

Zabbix remote ping check

I’ve had my Zabbix install set up to notify me if the remote server has a high ping using this expression: {__Remote_Hosts:icmppingsec.avg(30)}>120 The problem is, if your network is congested, it can really hit often. I recommend moving the failed ping average up to 500, and adding another trigger: {__Remote_Hosts:icmpping.max(120)}