I’d been sending customers invoice via email until a few weeks ago it stopped working. There was an error message at the bottom says “Service Unavailable: Back-end server is at capacity” in red. Can someone point me in the right direction please?

Error: NameResolutionFailure means that you are still using an older version. Or that your server cannot resolve IP address of my.manager.io domain. Can you check what version are you on?

Issue with email - server edition

compuit January 9, 2016, 1:23pm 4

Search the forum for “SMTP” you will find help or have a quick look at No luck with custom SMTP

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Issue with email - server edition

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