A certain organisation rejecting email if not posted through Xtra's SMTP server

Discussion in 'NZ Computing' started by Lennier, Nov 21, 2003.

  1. Lennier

    Lennier Guest

    Wave.co.nz is rejecting email being sent by Xtra customers who do not use
    Xtra's SMTP server.

    Lennier
     
    Lennier, Nov 21, 2003
    #1
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  2. Lennier

    Lennier Guest

    The only problem with this is.... I am not using ANY version of Windows on
    my servers - they are Linux machines - and Mercury32 is a Windows
    application. I need good (non-Microsoft) Linux solutions.


    Lennier
     
    Lennier, Nov 21, 2003
    #2
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  3. Lennier

    Lennier Guest

    No - dumb ISPs who refuse connections from dialup IP numbers is what the
    problem is.

    And I didn't think I'd need to relay email when I should have been able to
    send it directly to the relevant server.

    Maybe POSTFIX or SENDMAIL can act as a relay - I just haven't explored
    them that throughly yet.

    Lennier
     
    Lennier, Nov 21, 2003
    #3
  4. Lennier

    Mainlander Guest

    You mean Xtra customers who dial up on an Xtra connection, and try to use
    Wave's SMTP server? It's called blocking relaying, and is
    extreeeeeeemmmmmmeeeeeeelllllllyyyyyyyyyy common practice.
     
    Mainlander, Nov 21, 2003
    #4
  5. Lennier

    Mainlander Guest

    So get another ISP
     
    Mainlander, Nov 21, 2003
    #5
  6. I think you miss his point. Hes talking about the SMTP server RECIEVING
    the email (wave.co.nz). Hes using his own SMTP server to send it.

    The practice that wave are guilty of, is refusing connections from what
    it thinks are dialup IP addresses. Whether they have sent spam or not.

    The negative consequence of this, is that it moves the internet slowly
    towards a situation where only big corporations are trusted, and the
    individual user is not. Further centralising and commercialising the net.
     
    Kurt Häusler, Nov 21, 2003
    #6
  7. I think you miss his point again. Its not his ISP thats at fault here,
    its wave; the ISP of the indented recipient.

    They are discriminating against dialup users, in effect saying only big
    corporations have the right to send emails, and the little people are
    all spammers. It insists that little guys have to ask a big corporation
    to send his email on his behalf rather than directly.

    Its of minimal advantage in the fight against spam, and a huge annoyance
    for home users and small businesses that run their own SMTP servers.
    Especially if their ISP is an IP only provider.

    What wave is doing, is forcing such customers to pay for a third party
    service to send email on their behalf, when they shouldnt have to, just
    to satisfy the misguided ideas of a small number of ISPs.
     
    Kurt Häusler, Nov 21, 2003
    #7
  8. Lennier

    Enkidu Guest

    Why don't they just reject all email from Xtra like I do.

    Cheers,

    Cliff
     
    Enkidu, Nov 21, 2003
    #8
  9. Lennier

    Mainlander Guest

    Another fool who tries to tell people they shouldn't use a large ISP
    because he doesn't like them. If you were running a real ISP people would
    be leaving in droves.
     
    Mainlander, Nov 21, 2003
    #9
  10. Lennier

    Enkidu Guest

    I have no problem with people using Xtra. I just won't receive any
    viruses and SPAM from them.

    Cheers,

    Cliff
     
    Enkidu, Nov 22, 2003
    #10
  11. Lennier

    Mainlander Guest

    What about email?
     
    Mainlander, Nov 22, 2003
    #11
  12. Lennier

    Enkidu Guest

    What about email? All I've ever had from them is SPAM and viruses.

    Cheers,

    Cliff
     
    Enkidu, Nov 22, 2003
    #12
  13. Lennier

    Mainlander Guest

    You telling me no one you know uses Xtra? I have lots of friends using
    it.
     
    Mainlander, Nov 23, 2003
    #13
  14. Lennier

    Shannon Guest

    Amazing, there's an ISP in NZ that actually has clue about things!
    Yay! Go Wave!

    Wave.co.nz wouldn't be the only company. It's very standard practice
    to block incoming mail being sent directly from dial-up IP space.

    My company does - using data from SORBS. <www.dnsbl.au.sorbs.net>

    (Generally any incoming mail from dial-up IP space is from a trojaned
    home machine, open relay or open proxy. In other words, it's almost
    invarably spam - we've had one exception so far, and that was fixed.
    Thousands of spam stopped though.)

    You have no reason whatsoever to be sending email not via your ISP's
    mail server unless you have a static IP and an agreement with your ISP
    to run a server.

    Get a commercial smarthost service if you need to. (There are some -
    such as no-ip.com )

    (Now, if only Xtra's mail servers would block multilevel open relay -
    ie would block email that's being open-relayed through their client's
    systems.)
     
    Shannon, Nov 27, 2003
    #14
  15. Lennier

    Shannon Guest

    Wrong, no, it'll move to an Internet where only systems with Static
    IP's are trusted.

    And I don't trust anyone with a dynamic IP to send email.
     
    Shannon, Nov 27, 2003
    #15
  16. Lennier

    Lennier Guest

    This is not true.

    I use my own mta - Postfix - to send my emails without recourse to Xtra's
    servers.

    Only two organisations cause me difficulties - one of them is an ISP, and
    the other is a CRI.

    For those two addresses I use Xtra's server.


    Lennier
     
    Lennier, Nov 27, 2003
    #16
  17. Lennier

    Enkidu Guest

    This is true. You must be just lucky. Even one of the biggest SPAMmers
    out there, RoadRunner, will refuse email from hosts that do not
    reverse resolve. So will AOL. Not many is NZ do at present, (actually
    none that I know of) but it *is* spreading.

    Cheers,

    Cliff
     
    Enkidu, Nov 27, 2003
    #17
  18. Lennier

    Mainlander Guest

    Why are you still on Xtra if you despise them so much?
     
    Mainlander, Nov 27, 2003
    #18
  19. Lennier

    Shannon Guest

    It's not reverse resolution that's the issue - currently my company
    doesn't filter out such email, but I'm hoping with the next version of
    Vamsoft's ORFEE we'll be able to. (I gather you're talking about
    missing PTR records, or PTR records that don't then forwards-resolve.)

    What we do use is certain DNS blocklists that try to list all dynamic
    space (specifically, SORBS in this case, and formely the Easynet.nl,
    but they're going offline come December).

    (Just because it doesn't reverse resolve means it's dynamic and vice
    versa - if an IP resolves to "1-2-3-4.dialup.someisp.net" then it's
    almost certainly dynamic but it quite probably forward and back
    resolves. All Xtra's dynamic space does forward and back resolve, as
    far as I know.)
     
    Shannon, Nov 28, 2003
    #19
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