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  1. #1
    Join Date
    Jul 2009
    Posts
    70

    Can't send email to some domains 5.1.17 error

    Hi,

    I've recently moved to a new hosting company (Media Temple). All seems to have gone smoothly but I can't send emails to some particular domains. These domains are hosted on our old server if that could be an issue.

    When I try to send mail to these addresses, I'm given an error message in Thunderbird which says "An error occurred while sending the email. The mail sever responded: sorry, no mailbox here by that name. (#5.1.17). Please check the message recipients and try again."

    Any ideas on how to solve this ASAP?

    Thanks in advance,
    Brendan

  2. #2
    Join Date
    Sep 2007
    Posts
    368

    *

    Quote Originally Posted by kendalbren View Post
    Hi,

    I've recently moved to a new hosting company (Media Temple). All seems to have gone smoothly but I can't send emails to some particular domains. These domains are hosted on our old server if that could be an issue.

    When I try to send mail to these addresses, I'm given an error message in Thunderbird which says "An error occurred while sending the email. The mail sever responded: sorry, no mailbox here by that name. (#5.1.17). Please check the message recipients and try again."

    Any ideas on how to solve this ASAP?

    Thanks in advance,
    Brendan

    did you create old mailboxes on new hosting?
    did you change the nameserver or MX or "A" record?
    did you change Thunderbird setting with respect to new hosting account for pop/smtp?

  3. #3
    Hello,

    This message is also typically displayed when trying to send mail without first authenticating, with the server requiring SMTP authentication and/or is not an open relay.

    Check with your hosting provider to ensure you have the correct SMTP settings in your client.

    Hope this helps!
    Brock Hensley
    Technical Support Representative
    http://www.ServerIntellect.com
    Managed Servers, 24x7 U.S. Support, Web Hosting Solutions

  4. #4
    Join Date
    Jul 2009
    Posts
    70
    Quote Originally Posted by nomankhn View Post
    did you create old mailboxes on new hosting?
    did you change the nameserver or MX or "A" record?
    did you change Thunderbird setting with respect to new hosting account for pop/smtp?
    Thanks for your reply.

    I created the same mailboxes with the new hosting company.
    I changed the nameservers to the new server settings.
    I changed the settings in Thunderbird to the new settings.

  5. #5
    Join Date
    Jul 2009
    Posts
    70
    Quote Originally Posted by ServerIntellect_BH View Post
    Hello,

    This message is also typically displayed when trying to send mail without first authenticating, with the server requiring SMTP authentication and/or is not an open relay.

    Check with your hosting provider to ensure you have the correct SMTP settings in your client.

    Hope this helps!
    Thanks for your reply.

    I've checked that the settings are correct in my client. They should be mail.mydomain.co.uk which is pretty standard I guess. Any more ideas or pointers in to how I can solve this problem?

    Thanks,

  6. #6
    Join Date
    Aug 2009
    Location
    Nashville
    Posts
    13
    Do you get this with every mailbox to that domain or just some?

    Can you send them from hotmail/yahoo with any issues?

    Honestly it just sounds like incorrect DNS setup for the domain in question or cached MX record (which won't matter in a few hours anyway)

    If you really can't figure it out you are welcome to PM the domain, a valid email address, old mail server IP and new mail server IP and I could tell you what is wrong in about 20 seconds. Would take to long to draw out a flow chart on how you troubleshoot SMTP.

  7. #7
    Join Date
    Aug 2009
    Location
    Nashville
    Posts
    13
    Or do the following (easier then a flow chart)

    open a telnet session to the new mail servers IP address (port 25)

    Windows: "Telnet IPADDRESS 25"
    And type the following:

    helo testing.com
    mail from: [email protected]
    rcpt to: [email protected]
    data
    test
    .

    Tell me where it errors. If it doesn't, you have a DNS issue, if it errors at connecting to the IP it is a SMTP server issue, if it errors at rcpt to it is a mailbox issue. IF YOU SWEAR it isnt a mailbox issue but it looks like it is try it from a different IP as some anti-spam software will reply back with mailbox doesn't exist if flagged.
    Last edited by nolimitsoldier; 08-12-2009 at 08:27 PM.

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