SMTP Email Log Error

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Joined: Tue Apr 14, 2015 1:56 pm

SMTP Email Log Error

Post by dspender » Tue Apr 14, 2015 2:07 pm

Get this error after clicking "Test Email Settings"

4/14/2015 10:01:32 AM: Compressing...
Error with connecting server;current server:;connect failed, error: 0x0000274d

SyncBackSE v7.0.32.0
OS: Windows 2008 R2 (firewall OFF)

Email Service: Custom
Server Type: SMTP
To: [email protected]
From: [email protected]
Subject: Backup Complete

Testing from server that has SyncBack installed:

telnet 25
220 ESMTP (9ed58b038f97fb2942ed29e9e9ba14d8)
250 Hello [], pleased to meet you

3rd party mailsend exe:

SMTP server address/IP:
From: [email protected]
To: [email protected]
Subject: Media Backup
Type . in a new line and press Enter to end the message, CTRL+C to abort
Mail sent successfully

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Re: SMTP Email Log Error

Post by Kostas » Fri Apr 17, 2015 6:37 am


When you say that the firewall is OFF, do you mean that you have totally disabled it? There is something definitely blocking SyncBack from sending out the email. Error 0x0000274d (as per the KB article means that your system is telling us the connection is being actively blocked or refused (that's a Windows error number, equivalent in decimal to socket error 10061 - it's not an error in our software, it's a response from your system). There's not a lot we can do about it except to cite the likely usual reasons.


Conrad Chung
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Re: SMTP Email Log Error

Post by Conrad Chung » Sun Apr 19, 2015 11:03 am

Just to add-on, it is also possible that an AV program or other security apps is blocking mail transmission from unknown software (example, SyncBackSE) which has not been added into its whitelist for full access, etc. Some AV programs have been known to restrict SMTP traffic (unless explicitly allowed) to prevent malware sending/mass mailing, etc).

Please note that your SE V7 is outdated (V7.0.32.0). Please update to the latest V7 copy (V7.3.1.12) by downloading the installer here:

Do not uninstall and reinstall, or you'll lose your profiles & settings. Just install 'over the top'.

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Re: SMTP Email Log Error

Post by mgutt » Wed Nov 15, 2017 6:30 pm

I have the same error. I tested to remove syncback.exe from the firewall. After that the backup to my local ftp server failed. So I re-added it, but it did not solve the e-mail problem. I do not have any additional security tools installed. Only the default Windows 10 Firewall is active. Is the syncbackpro.exe the one that trys to send the email or do I need to add an other app?
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