ISP's and service providers who block outbound smtp port 587 (OP587B)

Discussion in 'Email Service Support Forums' started by popowich, Feb 13, 2013.

  1. popowich

    popowich EQ Forum Admin Staff Member

    Aug 12, 2008
    Likes Received:

    In addition to ISP's blocking outbound port 25 smtp traffic, it is being reported that some service providers are now blocking port 587 too.

    If you know of an ISP that is blocking outbound port 587 please share the info since it is valuable to know when troubleshooting email sending connection problems.

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