Requirements: ISPConfig >= 3.1 and Bind DNS-Server Installation: cd /tmp wget https://www.schaal-it.com/downloads/caa-patch.tgz tar xfz caa-patch.tgz cd caa-patch php -q install.php Install this patch on all servers in a multiserver-setup. What is a CAA-Record? CAA can be used to determine which certification authority is allowed to issue certificates for the domain. […]
To send emails with Postfix, a few things have to be considered. These are either defined in RFCs or generally useful. 1. matching reverse DNS RFC1912 requires that the PTR record and the A record in DNS match. On the one hand it shows that the administrator understands the RFCs, […]
DMARC extends SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail) and is stored as a TXT record in the DNS. DMARC is officially still a draft, but is already supported by many vendors – and it can not hurt. A very simple DNS entry looks in bind like this: […]
I use SPF records for many years. My implementation of SPF records in ISPConfig occurred to me to point out the advantages again. SPF is an authentication method that is stored in the DNS. This entry specifies which server can send mail for a particular domain. And why do I […]
This Setup is for dkim-patch >= 1.0 only. For older versions please see here. Features full DKIM support different strengths DKIM keys up to 4096 bits automatic update of domain-key records in the DNS Updating the DKIM keys at any time (automatic update of the selectors and the DNS zone) […]
A new version of the DKIM-Patch for ISPConfig is available now. Download: DKIM-Patch Changes to 0.2.2: 2013-10-11 skip writing dkim-values for inactive domains removed the public-dkim-key from the interface; the dns-record will be created within the dns-module. there is no need to display the public-key anymore. the public-key is also […]
The following post refers to http://www.howtoforge.com/forums/showthread.php?t=62702 When using several servers for web and / or mail, all must each be recorded in the DNS. But if one server fails, the DNS entries have to be adjusted accordingly; a round-robin DNS solution leads to timeouts, too. If only the local IP […]
This setup ist for dkim-patch up to 0.4.1. For newer versions please see here. I have already described how a DKIM key can insert into amavis with ISCPonfig automatically. While the former solution works, but is not controllable via the interface and thus also not apply to customers / clients […]