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  1. #1
    Join Date
    Feb 2018
    Posts
    1

    Angry reChange my HELO message C programme email client

    I am trying to validate email ID through program, but I am getting below error

    "501 5.5.4 HELO/EHLO argument invalid, closing connection. v13si67498pas.128 - gsmtp"

    I am getting above error from last 3-4 days

  2. #2
    Arjay's Avatar
    Arjay is offline Moderator / MS MVP Power Poster
    Join Date
    Aug 2004
    Posts
    12,667

    Re: reChange my HELO message C programme email client

    Are you coding in C# or C?

  3. #3
    2kaud's Avatar
    2kaud is offline Super Moderator Power Poster
    Join Date
    Dec 2012
    Location
    England
    Posts
    6,269

    Re: reChange my HELO message C programme email client

    It would help if you posted the code.
    All advice is offered in good faith only. All my code is tested (unless stated explicitly otherwise) with the latest version of Microsoft Visual Studio (using the supported features of the latest standard) and is offered as examples only - not as production quality. I cannot offer advice regarding any other c/c++ compiler/IDE or incompatibilities with VS. You are ultimately responsible for the effects of your programs and the integrity of the machines they run on. Anything I post, code snippets, advice, etc is licensed as Public Domain https://creativecommons.org/publicdomain/zero/1.0/ and can be used without reference or acknowledgement. Also note that I only provide advice and guidance via the forums - and not via private messages!

    C++17 Compiler: Microsoft VS2017 (15.7.4)

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