smtp from inside to outside on 506E?

Discussion in 'Cisco' started by joeblow, Jun 8, 2004.

  1. joeblow

    joeblow Guest

    I want to send the occasional email alert from our inside (inside
    security100) to outside (security0). Outside is connected to the DSL.
    Since I'm going from inside to outside, there shouldn't be any
    configuration entries required, no fixups or access-lists or whatever,
    right?

    thx, in advance.
     
    joeblow, Jun 8, 2004
    #1
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  2. In article <>,
    joeblow <> wrote:
    :I want to send the occasional email alert from our inside (inside
    :security100) to outside (security0). Outside is connected to the DSL.
    :Since I'm going from inside to outside, there shouldn't be any
    :configuration entries required, no fixups or access-lists or whatever,
    :right?

    It depends how you have configured.

    If you are starting with a factory default 506E and your inside traffic
    is in the 192.168.1/24 subnet, then, Yes, It Should Just Work. But if
    you have configured anything on your 506E then you might have
    restricted your ability to go out.

    If you do NOT have an access-group applied to your inside interface,
    then the minimum you need is a nat (inside) 1 0 0 statement along
    with a global (outside) 1 interface statement

    You do NOT need fixups for outgoing SMTP. You -might- need to change an
    existing access-list if your existing list does not permit the SMTP
    outwards.


    Note: if you want SMTP to work properly, you should be sure to have a
    valid reverse DNS entry for your outside IP address. You should
    also read up and decide how you want to handle the IDENT protocol,
    which won't prevent SMTP from working [usually!] but can slow it
    down a lot.
    --
    Studies show that the average reader ignores 106% of all statistics
    they see in .signatures.
     
    Walter Roberson, Jun 8, 2004
    #2
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