Results 1 to 2 of 2

Thread: Unable to send to external email address from an external network

Hybrid View

  1. #1
    Join Date
    Dec 2008
    Location
    Sydney
    Posts
    1
    Rep Power
    6

    Default Unable to send to external email address from an external network

    Hi, I was wondering if anybody can help me with my situation. I'm fairly new to Zimbra and the Linux environment.

    I've managed to successfully implement Zimbra into our company network and so far all is working well, except for people sending emails to external addresses from an external network. for example, an employee working from home wishing to send an email to a GMAIL account will fail to smtp error 554 - transaction failed.

    we use the mail server to pop and smtp to retrieve and send emails respectively on the same address:
    eg. pop3 server: email.server.com.au
    smtp server: email.server.com.au

    so far:
    local users within company network: can send/receive emails to and from internal and external addresses using outlook or web client. absolutely no problems within internal network what so ever.

    but
    external users outside company network: can only retrieve emails from internal and external addresses using outlook. they can send emails to internal addresses but not external addresses.
    they have no issues with the web client from external network, however they prefer to use outlook.

    bandaid fixes so far:
    -i have advised home users to use their ISP's mail server for outgoing mail.
    -i've added their external ip address subnet to trusted networks list
    (eg 203.171.58.0/24 or 220.0.0.0/8)

    i need help finding a permenant fix because the first bandaid solution is annoying when you have to keep changing smtp addresses everytime you are in a different location.
    and the second solution leaves the mail server open to spammers.

    have i missed a setting?

    kind regards,
    AW

  2. #2
    phoenix is offline Zimbra Consultant & Moderator
    Join Date
    Sep 2005
    Location
    Vannes, France
    Posts
    23,587
    Rep Power
    58

    Default

    You should not add any IP addresses to the Trusted Network list other than your loopback address and the LAN subnet that your Zimbra server is on. If your users are authenticating against the Zimbra server when they login then they can relay anywhere without problems. There are several threads in the forums that cover this topic, have a look at them and post again if you have any questions.
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

Similar Threads

  1. [SOLVED] external email account
    By NoDoze in forum Users
    Replies: 6
    Last Post: 08-06-2008, 03:10 PM
  2. Replies: 1
    Last Post: 02-20-2008, 10:19 AM
  3. Can't change outgoing email address
    By albanach in forum Zimbra Connector for Outlook
    Replies: 3
    Last Post: 02-06-2008, 12:09 PM
  4. cannot send email to sina/yahoo
    By koolokamba in forum Administrators
    Replies: 2
    Last Post: 06-20-2006, 09:03 AM
  5. Network service error when trying to send email
    By wayne in forum Administrators
    Replies: 4
    Last Post: 09-15-2005, 04:37 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •