after using em client for years now i can’t send emails only receive them.it says 5.1.0 vm401 authentication required.can anyone help? would installing a previous version help .
can you snap it and send so i can see
Updated to latest version after being prompted on screen but now unable to send emails - receiving message 5.1.0. Authentication Required VM401
Try the suggested post from @Gary below on this subject via “Menu / Accounts”.
thanks for your help tried that but no good didn’t disable anti virus though will have to get someone in who knows more than me.thanks once again.
what is snap it have not heard that expression before?if it means take a picture and send it to you i can’t send emails will just have to get someone in who knows more than me.thanks anyway.
no problem i was wondering if we could be friends and from the united kindom
I am intermittently having the same problem since the upgrade. Try:
Port 587
Force usage of SSL/TLS
Check: Server requires authentication and Use identity credentials.
Same problem here. Mailserver is Dovecot and Postfix and has no changes since a long time. The problem persist since upgrade to version 10 for all accounts.
Maybe the “KI” can help the programmers to fix it shortly?
Grrr…
The server log says:
connect from unknown[xxx.xxx.xxx.xxx]
Aug 5 07:18:47 servername postfix/smtpd[10740]: connect from unknown[xxx.xxx.xxx.xxx]
Aug 5 07:18:47 sername postfix/smtpd[10740]: lost connection after UNKNOWN from unknown[xxx.xxx.xxx.xxx]
Why “unknown”? I would expect a hostname here?
I add a comparison of the Emclient Log entries for SMTP connections under version 9 and under V10:
Version 9
08:13:58.660|00B| eM Client 9.2.2258+70804790a5 (Windows)
08:13:58.664|00B| Account’s UID is {MY UID}
08:13:58.681|00B| AccountBase.ChangeOnlineState : State changed to ONLINE due User
08:14:27.559|016| SMTP S: 220 {MAILSERVER} ESMTP Postfix
08:14:27.571|016| SMTP C: EHLO [{CLIENT IPv4}]
08:14:27.576|016| SMTP S: 250-{MAILSERVER}
08:14:27.580|016| SMTP S: 250-PIPELINING
08:14:27.585|016| SMTP S: 250-SIZE 27500000
08:14:27.589|016| SMTP S: 250-VRFY
08:14:27.593|016| SMTP S: 250-ETRN
08:14:27.597|016| SMTP S: 250-STARTTLS
08:14:27.601|016| SMTP S: 250-ENHANCEDSTATUSCODES
08:14:27.605|016| SMTP S: 250-8BITMIME
08:14:27.608|016| SMTP S: 250 DSN
08:14:27.613|016| SMTP C: STARTTLS
08:14:27.618|016| SMTP S: 220 2.0.0 Ready to start TLS
08:14:27.629|016| SMTP C: EHLO [{CLIENT IPv4}]
08:14:27.634|016| SMTP S: 250-{MAILSERVER}
08:14:27.638|016| SMTP S: 250-PIPELINING
08:14:27.642|016| SMTP S: 250-SIZE 27500000
08:14:27.646|016| SMTP S: 250-VRFY
08:14:27.649|016| SMTP S: 250-ETRN
08:14:27.653|016| SMTP S: 250-AUTH PLAIN LOGIN GSSAPI
08:14:27.657|016| SMTP S: 250-AUTH=PLAIN LOGIN GSSAPI
08:14:27.661|016| SMTP S: 250-ENHANCEDSTATUSCODES
08:14:27.669|016| SMTP S: 250-8BITMIME
08:14:27.673|016| SMTP S: 250 DSN
08:14:27.681|016| SMTP C: AUTH PLAIN <Parameter wurde aus Datenschutzgründen entfernt.>
08:14:27.769|016| SMTP S: 235 2.7.0 Authentication successful
08:14:27.792|016| SMTP C: MAIL FROM:<{SENDER MAIl ADDRESS}> SIZE=469
08:14:27.801|016| SMTP S: 250 2.1.0 Ok
08:14:27.807|016| SMTP C: RCPT TO:<{RECEIVER MAIL ADDRESS}>
08:14:27.815|016| SMTP S: 250 2.1.5 Ok
08:14:27.821|016| SMTP C: DATA
08:14:27.825|016| SMTP S: 354 End data with .
08:14:27.836|016| SMTP C:
08:14:27.840|016| SMTP C: .
08:14:27.886|016| SMTP S: 250 2.0.0 Ok: queued as D3E9B1C03D7
08:14:27.893|016| SMTP C: QUIT
08:14:27.898|016| SMTP S: 221 2.0.0 Bye
Version 10
07:56:28.926|001| eM Client 10.0.3266+7060eeaac9 (Windows)
07:56:28.926|001| Account’s UID is {OTHER UID}
07:56:28.926|001| AccountBase.ChangeOnlineState : State changed to ONLINE due User
07:56:28.941|012| SMTP S: 220 {MAILSERVER} ESMTP Postfix
07:56:28.941|012| SMTP C: EHLO [IPv6:::ffff:{CLIENT IPv4}]
07:56:28.942|012| SMTP S: 250-{MAILSERVER}
07:56:28.942|012| SMTP S: 250-PIPELINING
07:56:28.942|012| SMTP S: 250-SIZE 27500000
07:56:28.942|012| SMTP S: 250-VRFY
07:56:28.942|012| SMTP S: 250-ETRN
07:56:28.943|012| SMTP S: 250-STARTTLS
07:56:28.943|012| SMTP S: 250-ENHANCEDSTATUSCODES
07:56:28.943|012| SMTP S: 250-8BITMIME
07:56:28.943|012| SMTP S: 250 DSN
07:56:28.943|012| SMTP C: STARTTLS
07:56:28.943|012| SMTP S: 220 2.0.0 Ready to start TLS
07:56:28.950|012| SMTP C: EHLO [IPv6:::ffff:{CLIENT IPv4}]
07:56:28.950|012| SMTP S: 250-{MAILSERVER}
07:56:28.950|012| SMTP S: 250-PIPELINING
07:56:28.950|012| SMTP S: 250-SIZE 27500000
07:56:28.950|012| SMTP S: 250-VRFY
07:56:28.950|012| SMTP S: 250-ETRN
07:56:28.950|012| SMTP S: 250-AUTH PLAIN LOGIN GSSAPI
07:56:28.950|012| SMTP S: 250-AUTH=PLAIN LOGIN GSSAPI
07:56:28.950|012| SMTP S: 250-ENHANCEDSTATUSCODES
07:56:28.950|012| SMTP S: 250-8BITMIME
07:56:28.950|012| SMTP S: 250 DSN
07:56:28.951|012| SMTP C: AUTH GSSAPI <Parameter wurde aus Datenschutzgründen entfernt.>
07:56:30.456|012| SMTP S: 535 5.7.8 Error: authentication failed:
08:01:24.970|012| Exception: MailClient.Accounts.AuthenticationAbortedException: Authentifizierung abgebrochen
08:01:24.970|012| at MailClient.Protocols.Smtp.SmtpSendCommand.Authenticate(WorkerStatus status)
08:01:24.970|012| at MailClient.Protocols.Smtp.SmtpSendCommand.Connect(WorkerStatus status)
08:01:24.970|012| at MailClient.Protocols.Smtp.SmtpSendCommand.Execute(WorkerStatus status)
08:01:24.970|012| at MailClient.Commands.Command.Process(WorkerStatus status)
08:01:24.970|012| AccountBase.GoOfflineAsync : State changed to OFFLINE due LoginCanceled
08:01:24.971|007| AccountBase.ChangeOnlineState : State changed to OFFLINE due LoginCanceled
Here I can see a difference directly on how the client reports:
V9:
SMTP C: EHLO [{CLIENT IPv4}]
{CLIENT IPv4} = for example 192.168.100.101
V10:
SMTP C: EHLO [IPv6:::ffff:{CLIENT IPv4}]
{CLIENT IPv4} = for example 192.168.100.202
Both clients are configured to IPV4 on the network. IPV6 is not active at all.
I don’t understand what the IPV6 (!) Prefix does here?