![Thunderbird logo](https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/products/2024-02-12-07-36-53-599028_1.png)
An error occurred while sending mail. The mail server responded: Syntax error, command unrecognized.
I am unable to send emails all of a sudden. I keep getting this message.
"An error occurred while sending mail. The mail server responded: Syntax error, command unrecognized. Please check the message recipient ___________ @gmail.com and try again."
All Replies (10)
please copy to clipboard and paste into a message the troubleshooting information from the help menu of Thunderbird.
Hi Matt, I have tried putting what is written below into the help menu and this did not help at all. I spent an hour with customer service with my email provider. They could not figure out the issue.
An error occurred while sending mail. The mail server responded: Syntax error, command unrecognized. Please check the message recipient michael@_------_.com and try again.
I will try again.
Go to the help menu. Click on troubleshooting information Press the copy to clipboard button Come to this forum. Paste into a reply on this thread Click the Post reply button.
Izmjenjeno
Here you go. Thanks
Application Basics
Name: Thunderbird Version: 31.7.0 User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 Profile Folder: Show Folder
(Local drive) Application Build ID: 20150507114201 Enabled Plugins: about:plugins Build Configuration: about:buildconfig Memory Use: about:memory
Mail and News Accounts account2: INCOMING: account2, , (none) Local Folders, plain, passwordCleartext
account3: INCOMING: account3, , (imap) imap.secureserver.net:993, SSL, passwordCleartext OUTGOING: smtpout.secureserver.net:465, SSL, passwordCleartext, true
account6: INCOMING: account6, , (imap) mail.hover.com:143, plain, passwordCleartext OUTGOING: mail.hover.com:587, plain, passwordCleartext, true
Crash Reports
Extensions
Important Modified Preferences
Name: Value
browser.cache.disk.capacity: 358400 browser.cache.disk.smart_size_cached_value: 358400 browser.cache.disk.smart_size.first_run: false browser.cache.disk.smart_size.use_old_max: false extensions.lastAppVersion: 31.7.0 font.name.monospace.el: Consolas font.name.monospace.tr: Consolas font.name.monospace.x-baltic: Consolas font.name.monospace.x-central-euro: Consolas font.name.monospace.x-cyrillic: Consolas font.name.monospace.x-unicode: Consolas font.name.monospace.x-western: Consolas font.name.sans-serif.el: Calibri font.name.sans-serif.tr: Calibri font.name.sans-serif.x-baltic: Calibri font.name.sans-serif.x-central-euro: Calibri font.name.sans-serif.x-cyrillic: Calibri font.name.sans-serif.x-unicode: Calibri font.name.sans-serif.x-western: Calibri font.name.serif.el: Cambria font.name.serif.tr: Cambria font.name.serif.x-baltic: Cambria font.name.serif.x-central-euro: Cambria font.name.serif.x-cyrillic: Cambria font.name.serif.x-unicode: Cambria font.name.serif.x-western: Cambria font.size.fixed.el: 14 font.size.fixed.tr: 14 font.size.fixed.x-baltic: 14 font.size.fixed.x-central-euro: 14 font.size.fixed.x-cyrillic: 14 font.size.fixed.x-unicode: 14 font.size.fixed.x-western: 14 font.size.variable.el: 17 font.size.variable.tr: 17 font.size.variable.x-baltic: 17 font.size.variable.x-central-euro: 17 font.size.variable.x-cyrillic: 17 font.size.variable.x-unicode: 17 font.size.variable.x-western: 17 gfx.direct3d.last_used_feature_level_idx: 1 mail.openMessageBehavior.version: 1 mail.winsearch.firstRunDone: true mailnews.database.global.datastore.id: eac2cdea-5c53-4e92-b586-073246cf2f6 mailnews.database.global.views.conversation.columns: {"threadCol":{"visible":true,"ordinal":"1"},"flaggedCol":{"visible":true,"ordinal":"3"},"attachmentCol":{"visible":false… network.cookie.prefsMigrated: true places.database.lastMaintenance: 1431961214 places.history.expiration.transient_current_max_pages: 104858 plugin.disable_full_page_plugin_for_types: application/pdf plugin.importedState: true
Graphics
Adapter Description: NVIDIA Quadro NVS 290 Vendor ID: 0x10de Device ID: 0x042f Adapter RAM: 256 Adapter Drivers: nvd3dumx,nvwgf2umx,nvwgf2umx nvd3dum,nvwgf2um,nvwgf2um Driver Version: 9.18.13.1115 Driver Date: 1-31-2013 Direct2D Enabled: true DirectWrite Enabled: true (6.2.9200.16492) ClearType Parameters: ClearType parameters not found WebGL Renderer: false GPU Accelerated Windows: 2/2 Direct3D 10
AzureCanvasBackend: direct2d AzureSkiaAccelerated: 0 AzureFallbackCanvasBackend: cairo AzureContentBackend: direct2d
JavaScript
Incremental GC: 1
Accessibility
Activated: 0 Prevent Accessibility: 0
Library Versions
Expected minimum version Version in use
NSPR 4.10.6 4.10.6
NSS 3.16.2.3 Basic ECC 3.16.2.3 Basic ECC
NSS Util 3.16.2.3 3.16.2.3
NSS SSL 3.16.2.3 Basic ECC 3.16.2.3 Basic ECC
NSS S/MIME 3.16.2.3 Basic ECC 3.16.2.3 Basic ECC
what you pasted shows the outgoing server name rather strangely.
Go to Tools menu (alt+T) > account settings > outgoing server (SMTP) and check the server name. What is posted here looks like about half of the secure word is missing.
The outgoing server is mail.hover.com whats strange out that? Please tell me how that should be different?
Is there a IT phone number I can call? I really need to get this fixed. As I am only able to use the email on my cell phone
No there is no phone number you can ring. There is this forum. Instead of ringing, how about actually defining the issue. Finally yuou let slip that it is your hover account that has a problem.
The error message would indicate that the email address is either incorrectly formatted or invalid. But try sending an email to devilsgatedrive@gmail.com and see if that gives the same error.
Hi Matt,
It does not matter who or what email I try to send to. The same message comes up. I have a laptop I use a t home and all the server and outgoing server info is exactly the same as the account on my work computer. Yet it still does not work. Every time this message comes up
"An error occurred while sending mail. The mail server responded: Syntax error, command unrecognized. Please check the message recipient devilsgatedrive@gmail.com and try again."
Looking over those settings again. Hover says use SSL on Port 465. You have the setting as none and Port 587.
Note here. Due to language semantics. If SSL/TLS does not work try START/TLS. Although it should be SSL/TLS some people incorrectly use the terms interchangeably.