Sven Welzel — Der Blog

Tag: mail server

  • 3G SMTP servers for MTN, Vodacom, CellC etc

    On 3G and outgoing mail not sending? Chances are, you need to set the SMTP server specific to your network. Here’s the list that may grow over time: (more…)

  • Postfix maximum individual mail size and mailbox size

    If you’re getting the "5.3.4 Messag exceeds fixed limit” error, check on the default vs set values in your /etc/postfix/main.cf using
    postconf -d (for the default)
    and
    postconf -n (for the values you have set manually in the main.cf)
    Default for message_size_limit (maximum size per mail) is 10240000 (bytes, ie approx 10MB)

    Up this to your desired value, eg 30MB by setting
    postconf -e "message_size_limit = 30720000"
    specifiying the size in bytes.
    You can reset the maximum mailbox size using the same method (below just resets to the default value)
    postconf -e "virtual_mailbox_limit = 51200000"

    But you knew that already!