Hi Rudy

On 18 August 2011 14:49, Rudi Ahlers Rudi@softdux.com wrote:

Hi all,

I hope someone can help me with this please.

One of our clients has an in-house Postfix mailserver which basically downloads mail for the individual users from our mail server hosted on the web using fetchmail. They use our SMTP server to send mail. Their email clients are then setup to get & send mail from the server, on 192.168.2.254 (for POP3 & SMTP).  All mail between them on the local LAN gets send to each other via the server, and not the internet.

This works quite well, but as soon as someone sends mail from the Linux server directly (it has webmin + usermin installed and has a basic webmail interface for when they're out of the office) it sends mail using the local machine name, instead of the domain name. for example, mail comes from esther@ser001.rewards.local.

How do I tell Postfix to automaticlly send mail from <user>@<theirdomain.com> instead?

This comes straight out of the main.cf file and may be of some assistance:

# INTERNET HOST AND DOMAIN NAMES # # The myhostname parameter specifies the internet hostname of this # mail system. The default is to use the fully-qualified domain name # from gethostname(). $myhostname is used as a default value for many # other configuration parameters. # #myhostname = host.domain.tld #myhostname = virtual.domain.tld

# The mydomain parameter specifies the local internet domain name. # The default is to use $myhostname minus the first component. # $mydomain is used as a default value for many other configuration # parameters. # #mydomain = domain.tld

# SENDING MAIL # # The myorigin parameter specifies the domain that locally-posted # mail appears to come from. The default is to append $myhostname, # which is fine for small sites. If you run a domain with multiple # machines, you should (1) change this to $mydomain and (2) set up # a domain-wide alias database that aliases each user to # user@that.users.mailhost. # # For the sake of consistency between sender and recipient addresses, # myorigin also specifies the default domain name that is appended # to recipient addresses that have no @domain part. # #myorigin = $myhostname myorigin = $mydomain #myorigin = $myhostname

Sorry for asking this, but I don't know Postfix very well and don't know what to call to, to search on google.

-- Kind Regards Rudi Ahlers SoftDux

Regards, Andy.