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


EQ Forum Admin
Staff member

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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