Chat with us, powered by LiveChat I am receiving an outgoing mail server error and cannot send emails, what do I do? - Synergy Wholesale

I am receiving an outgoing mail server error and cannot send emails, what do I do?

Category: Email

Typically outgoing mail server errors indicate an issue with sending email; this is often the result of a misconfiguration in your email client or your ISP blocking important ports.

We recommend using your ISP’s outgoing mail server in your email client, as this works around any port blocking they may have in place. Here is a list of some common outgoing mailservers for Australian ISP’s, please note only the ISP in which you have your internet with will permit you to connect:



Telstra Bigpond

Your outgoing mail port will be 25 when using one of the above. If you experience issues connecting to your ISP’s outgoing mail server, your first port of call should be their support line.

I’m using the Synergy Wholesale Server for outgoing mail

If you’re using your hosting server for outgoing mail (i.e., then it’s possible your ISP is blocking the outgoing mail port. Within your email client we would recommend, where using as your outgoing mailserver, than you change the outgoing mailserver port from 25 to 587. This should alleviate your issues.

Additionally, when using the hosting server for you outgoing mail you will need to enable “Outgoing server requires authentication”.

More Info Request
  • Select All
  • Sample Pricing Guide
    Due to the nature of our services as a wholesale provider, we do restrict full pricing from being released. You can request a sample pricing guide to give you some insight as to what you can look forward to by becoming a partner with Synergy Wholesale.
  • API Information
  • Whitelabel Billing Information
  • Migration Process
* Required
Thank you for submitting a More Info Request!
An email will be sent to you shortly with the requested information.
Begin your 7-day free-trial today!
Get Started