4 Nov
2014
4 Nov
'14
6:56 a.m.
On Wed, 2014-11-05 at 14:14 +1300, Peter Lambrechtsen wrote:
Have to say that blocking inbound port 25 and 53 is highly recommended for all RSPs. Plus blocking outbound port 25 to only SMTP servers you run if you wanted a sense of if customers are using their connections for mass spamming. With an opt out of course. Given that mail servers also listen on 587 ( thanks billg ) and 465, isn't blocking just 25/tcp just a bit pointless?
Steve -- Steve Holdoway BSc(Hons) MIITP http://www.greengecko.co.nz Linkedin: http://www.linkedin.com/in/steveholdoway Skype: sholdowa