Hi, You can implement reverse DNS checks upon EHLO commands with
ReverseEqualsEhloHeloHandler will perform an equality check ResolvableEhloHeloHandler will check PTR record exists. Read more about this technique: https://blog.zensoftware.co.uk/2015/04/28/using-reverse-lookups-to-reduce-spam/ Cheers, Benoit Le 04/12/2017 à 15:40, Benoit Tellier a écrit : > Hi Mark, sorry for the late answer. > > To get a more personalized mail post processing, you will have to edit > **mailetcontainer.xml** file. > > Bounce is returned to the sender address advertized in the SMTP > envelope. You will need to detect "fake" incoming SMTP connections. > Several mechanisms exists to achieve this purpose: > - SPF. One intern in my company wrote a blog post about it [1] > - DKIM. I did not tested it so far but it should work. Look at JDKIM > mailet to achieve this. > - Reverse DNS resolution. You look that the given mail address > correspond to the domain of the address of the sender in the SMTP > envelope. Rather easy to implement but this feature is missing. I will > open a relevant ticket for this. > > Cheers, > > Benoit > > [1] > https://medium.com/linagora-engineering/installing-james-3-0-with-spf-verification-421b26b92f11 > > Le 30/11/2017 à 00:42, Mark Gordon a écrit : >> Hi, >> >> I have my james system setup. It is working great. >> >> What I would like to do is have James only handle smtp for a domain. So in >> the case of a bounce I would like for James to send the email to the system >> handling email for the domain. >> >> So bounce is one problem, but also if another domain tries to send an email >> to another domain on the james system the email is sent to the local user. >> I want it sent to the real mailbox. >> >> I am not doing a good job of explaining this. Sorry. >> >> It looks like james is not checking the MX record of the email and simply >> sending the email to the local user. >> >> How do I stop it from delivering the email locally. >> >> Thanks >> >> > > --------------------------------------------------------------------- > To unsubscribe, e-mail: server-user-unsubscr...@james.apache.org > For additional commands, e-mail: server-user-h...@james.apache.org > --------------------------------------------------------------------- To unsubscribe, e-mail: server-user-unsubscr...@james.apache.org For additional commands, e-mail: server-user-h...@james.apache.org
