Intermittent Error while sending email

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Joined: Sun Jul 07, 2019 11:59 am

Intermittent Error while sending email

Postby PavanLinux » Fri Feb 14, 2020 2:35 pm

Intermittent Error while sending email using Zimbra WebMail Client to newly added users, Error Message as shown below:

Message not sent; one or more addresses were not accepted.
Rejected addresses
method: [unknown]
msg: Invalid address: OSC <>. com.zimbra.cs.mailbox.MailSender$SafeSendFailedException: MESSAGE_NOT_DELIVERED; chained exception is: com.zimbra.cs.mailclient.smtp.InvalidRecipientException: RCPT failed: Invalid recipient 550 5.1.1 <>: Recipient address rejected: User unknown in local recipient table
detail: soap:Sender
trace: qtp2151717-187:1581684874693:ed222ad635be604b

Environment: CentOS 7.7 64bit
Zimbra OSE 8.8.15 for CentOS 7, Zimbra Patch 7 installed

Someone might have/had faced this issue for ZCS 8.8.15, please share the fix/resolutions for this issue.


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