Thanks a lot Noel - I seem to be on the right track with this, but am having a problem.
I have set up my system as you described, but with one change. I set up the virtual_alias file with the line: "@pisd.edu @oldpisd.edu,@newpisd.edu" rather than every email address - I have a dynamic userlist of over 6000 users! When I send an email to a "@pisd.edu" address, it changes the @oldpisd.edu address correctly, but the @newpisd.edu address is missing the username. For example, if a mail is sent to b...@pisd.edu, one email is generated & sent to b...@oldpisd.edu, but the 2nd email is generated to go to "@newpisd.edu" (no username), which then bounces because no such user exists. What can I do to correct this? Thanks, Scott Fitzhugh Plano ISD >>> Noel Jones <njo...@megan.vbhcs.org> 2/14/2011 8:59 AM >>> On 2/14/2011 8:39 AM, Scott Fitzhugh wrote: > I am new to Postfix and am wondering something about Postfix. > > Currently, all our email comes into 2 Proofpoint appliances. Email > that passes through goes straight to the Groupwise Internet Agent > (GWIA), which distributes the email where it needs to go within our > email system. > > We are switching to a cloud email system. In the transition period, > we'd like all email to go to both places, but not forwarded. > > Is it possible to use Postfix in the middle somewhere to send email to > two different locations? > > Thanks in advance, > Scott Fitzhugh To delivery mail to two locations, you need two recipients. In postfix, you can do this with virtual_alias_maps. You'll need a list of valid recipients. # main.cf relay_domains = example.com virtual_alias_maps = hash:/etc/postfix/virtual_alias transport_maps = hash:/etc/postfix/transport smtp_generic_maps = hash:/etc/postfix/generic # virtual_alias o...@example.com o...@old.example.com o...@new.example.com t...@example.com t...@old.example.com t...@new.example.com ... all users listed ... # transport old.example.com relay:[ip.of.old.server] new.example.com relay:[ip.of.new.server] # generic @old.example.com @example.com @new.example.com @example.com http://www.postfix.org/documentation.html -- Noel Jones
