Hi All

I am running OTRS version 3.2.2 on Ubuntu 12.04 Server.

I have an issue with mails going out to some client. I suspect their mailers are doing a DNS lookup or verifying for a valid or FSDN from/return address.

When I mail the clients from my own mail client (outlook or thunderbird) it works fine.

When I respond to the client from OTRS the mails are rejected by the remote mailer. See error below:

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<ettiene.vanderwatt@axis.com>: host anubis.se.axis.com[195.60.68.12] said: 504
    5.5.2 <Ubuntu-OTRS>: Helo command rejected: need fully-qualified hostname
    (in reply to RCPT TO command)

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I tried changing the actual Ubuntu host name to a FQDN but it still does not work.

I tried looked in the admin - framework settings for any way of sending mails out with ha FSQN but I cannot find any settings there.

Our mailer has a valid MX record, so I am not sure where to start looking.

If any person can direct me in the right direction I would highly appreciate it.

Kind Regards
Jason