Any help with this error?

Discussion in 'General discussions' started by Joseph, Sep 6, 2019.

  1. Joseph

    Joseph Member

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    When I email to my list using a SMTP server that I built, I usually encounter this error after a few days:

    smtp; 550-5.7.1 [xxx.xxx.xxx.xxx 18] Our system has detected that this message is 550-5.7.1 likely suspicious due to the very low reputation of the sending IP 550-5.7.1 address. To best protect our users from spam, the message has been 550-5.7.1 blocked. Please visit 550 5.7.1 https://support.google.com/mail/answer/188131 for more information. q18si1481423ejf.153 - gsmtp

    Anyone can help to deal with this error?
     
  2. Andy

    Andy Member

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    Obviously in Google's eye the server's IP address you are sending from is somehow BLACKLISTED and BLOCKED.

    The solution is to find another IP address that is NOT BLACKLISTED. It's as simple as that.

    On another note: SMTP is an extremely complex thing so why do you bother in trying to 'build' one? Especially as it seems obvious to me that you do not really know all of what you are doing...

    Take care!
    Andy
     
  3. laurentiu

    laurentiu Active Member Staff Member

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