Enable other ports for SMTP
Some providers do not allow outbound connections on ports 25, 465, and 587, such as Google Compute Engine.
It would be great to offer other ports for these providers.
6
votes
Philip Copeman
shared this idea
We have several alternative ports available, read more at http://blog.mailgun.com/25-465-587-what-port-should-i-use/
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Nicolas Grilly
commented
Enabling port 2525 would be perfect (this is what SendGrid and Mandrill do).