Today a customer wanted to use their current mail server for sending regular emails to a list with about 200.000 addresses in it. Sure no problem, but this will fill your queue and all other mail from/to your company will get delayed. To avoid this, you can setup Postfix so that it can run a […]
Category: Postfix
Popular open source email server for Unix
Rate limit incoming mail on Postfix
Today I ran into a problem with one of our ISPConfig 3 installations. It hosts a domain which seems to be very attractive for spammers, so what happened .. my mail server got hammered by a spam bot net ( not yet blocked by spamhaus as of typing this post). In ISPConfig 3 Postfix talks […]
Create a self signed SSL key for Postfix
I always forget the order of the commands to create a new set ssl keys for a postfix server, so here it is. For the Google-eyed visitors: The short version is at the bottom of this post.