Spamcop has a handy little tool to convert SPF record entries to IP address and/or ranges. Simply feed it a domain name and it will read in the SPF record if it exists and convert it to IPs. If no SPF is present then it will use the MX record. I suppose you *could* use this to check your own SPF records .... … [Read more...] about SPF to IP translation
MailScanner
Upgrading phishing list – the easy way
Julian posted a nice and easy way of upgrading your phishing list configuration (phishing.safe.sites.conf) without losing any of your custom changes: … [Read more...] about Upgrading phishing list – the easy way
Content Filtering with MailScanner – Part 1 – File Types
Mailscanner allows for a very fine level of control over email content and security via its configuration and ruleset files. This article shall look at setting up per user or per domain rules for file types. It is based on my experience with MailScanner on RPM based systems, however it should work on any system running a standard install of MailScanner. Why would this be of … [Read more...] about Content Filtering with MailScanner – Part 1 – File Types
SPF alla Microsoft – sender ID
There has been a lot of commotion in technical circles in the past week following on Microsoft's announcement that it was implementing Sender ID for hotmail. Microsoft's original plans for sender ID seemed to be quashed when the Open Source community, most notably the Apache Software Foundation, made it clear that they did not support Microsoft's implementation. The original MS … [Read more...] about SPF alla Microsoft – sender ID
Sendmail milters – not so open source anymore
A couple of months ago I mentioned sendmail milters. Snert are no longer offering all of them under an open source license unfortunately. In some ways I can understand why they are doing it. Even programmers have to eat :) - however it is still sad to see software licenses changing like that. The milter we are using, milter-ahead, is still available as "Free Source", but … [Read more...] about Sendmail milters – not so open source anymore