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For the last two days I have been getting this message: An error occurred while sending mail. The mail server responded: You need to authenticate when sending

IainW
IainW
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For the last two days I have been getting this message when sending e-mails: "An error occurred while sending mail. The mail server responded: You need to authenticate when sending from 5.62.43.30." If I click OK on this the message does not send, however if I leave this for a while (I haven't yet worked out the minimum time I can leave it!), then click OK the e-mail sends. This process freezes Thunderbird until it is sent. As far as I can see, my Outgoing Server settings are correct and have been working absolutely perfectly for years. ISP & e-mail address is Supanet, who have told me it is nothing to do with them (very helpful!) but the problem is with Thunderbird. Hope someone can help. Thanks

For the last two days I have been getting this message when sending e-mails: "An error occurred while sending mail. The mail server responded: You need to authenticate when sending from 5.62.43.30." If I click OK on this the message does not send, however if I leave this for a while (I haven't yet worked out the minimum time I can leave it!), then click OK the e-mail sends. This process freezes Thunderbird until it is sent. As far as I can see, my Outgoing Server settings are correct and have been working absolutely perfectly for years. ISP & e-mail address is Supanet, who have told me it is nothing to do with them (very helpful!) but the problem is with Thunderbird. Hope someone can help. Thanks

Alle svar (3)

user01229325
user01229325
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If your server settings were OK I doubt you would be seeing this error. Contact your provider for the current settings they use and compare with what you have in Thunderbird. You can go to the Help Menu and click Troubleshooting Information. Click Copy to Clipboard. Then paste that into a reply window here on the forum if you want someone to look at your existing settings.

IainW
IainW Spørgsmålsstiller
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I have checked with Supanet and have been told these settings are correct. Have included an image of the settings.

user01229325
user01229325
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IainW said

I have checked with Supanet and have been told these settings are correct. Have included an image of the settings.

I wish I had a nickel for every time I have heard that said by a provider help desk and it turns out the settings are wrong.

Port 110 and 25 are insecure ports. If that is all your provider offers, find another one!

There are some posts out there that mention using secure ports with SSL but your provider does not seem to have anything published that us non-customers can see.

Email is not that complex. You place the correct server settings in the email client and it works. All the time. Not just once in awhile.

Ask your provider to point you to a published page that shows the settings that their servers are looking for. 

Maybe someone else that uses your provider will come along and share working server settings.