Re: Reliabiltiy and scalability

From: Alex Satrapa (no email)
Date: Fri Feb 17 2006 - 00:32:11 EST

  • Next message: Matt Fretwell: "Re: postfix regexp problem"

    On 17 Feb 2006, at 06:18, Michael Rasmussen wrote:

    > I tossed off a terse "tell it to Redhat" response. Deciding that
    > was lame I went
    > to the postfix.org site to search for testimonials and the like.
    > Didn't find any.

    Testimonials are only really useful to reinforce the positive opinion
    of someone who wants to be convinced that your solution is the right
    way to go. That is, the mindset of someone who believes testimonials
    is, "I'm still a bit doubtful that making this choice will make me
    happy, but these testimonials are full of shiny happy people holding
    hands, so I now feel happy that I'm going to make the decision to use
    this product or service!"

    The best way to convert someone is to see that they have identified a
    problem, and show how that problem would be solved with the product
    that you are championing. Then leave it to them to figure out that
    your product is easier/quicker/more likely to satisfy their KPIs and
    operate in coherence with their corporate goals.

    Problem: "hand-editing all these configuration files is a pain - how
    am I supposed to get my relay servers to handle spam rejection the
    same way based on known users?"

    Answer: "Use LDAP. Configure recipient_canonical_maps and
    sender_canonical_maps, make sure you use smtpd_sender_restriction and
    smtpd_recipient_restrictions."

    Problem: "I'm having a problem getting greylisting to work... my M4
    files are [insert 4 pages of M4 macro]..."

    Answer: "Use postfix. Append 'check_policy_service inet:
    127.0.0.1:60000' to the smtpd_sender_restrictions, and run the
    greylist policy daemon listening on that port."

    ... of course, only propose solutions to the problem at hand. And
    make sure you try them yourself first. Nothing sucks as much as
    giving advice that doesn't work.

    Alex


  • Next message: Matt Fretwell: "Re: postfix regexp problem"





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