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DigitalOcean blocking port 25, 465, 587; make sure you're not affected!


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Just a heads up for anyone using DigitalOcean and sending out emails using SMTP with port 587, DigitalOcean just recently started blocking this port on "new" droplets.  I put "new" in quotes because that's not true: I have a droplet from months ago, before their supposed announced change, and it still got blocked.  I didn't realize this until one of my clients brought it up.  Good job DO! /s

I use WireMailSmtp and power it with Mailgun's SMTP credentials with port 587.  I've been doing it this way for a long time, although using Mailgun's direct API approach (of which WireMailgun uses) is more preferred and would avoid this issue.  I will start taking that approach soon with new and existing sites.  Using SMTP is convenient however.

Anyway, I'm not the only one that's complaining:
https://www.digitalocean.com/community/questions/smtp-587-ports-is-closed

An easy fix, for now at least, is to use port 2525 which is not blocked and which Mailgun also supports:
https://www.mailgun.com/blog/email/which-smtp-port-understanding-ports-25-465-587/

 

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