Managing and troubleshooting mail servers forms a vital part of the Outsourced Website Support services we provide to shared server owners.
Among the common mail server errors, 421 is a common one that happens due to ‘too many concurrent SMTP connections’. This error usually denotes a high-traffic recipient mail server. (more…)
SMTP error from remote mail server after RCPT TO:<email@example.com>: host domain.com [xx.xx.xx.xx]:
550-Please turn on SMTP Authentication in your mail client.
550-(mail.server.net) [xxx.xxx.xxx.xxx]:36825 is not permitted to relay through
550 this server without authentication.
All popular mail servers have SMTP authentication enabled for security protection. Mail accounts using those servers need to authenticate first, before trying to send mails.
At times, users can try to send mails from their mail clients without enabling authentication. ‘550-Please turn on SMTP Authentication’ is a commonly reported error when users try to send mails without authenticating.
At Bobcares website support services, this is a common error we see in cPanel/WHM shared hosting servers. We’ve seen that strict anti-spam rules or lack of SMTP authentication usually cause this error.
The mail user reports the error:
Task firstname.lastname@example.org – Sending reported error (0x800CCC78): ‘Cannot send the
message. Verify the email address in your account properties. The server
responded: 550 Access denied – Invalid HELO name (See RFC2821 188.8.131.52)
Corresponding entry in Exim logs say:
2014-09-24 07:06:31 H=isp-ip-dom.net [xxx.xxx.xxx.xxx] rejected MAIL
<email@example.com>: Access denied - Invalid HELO name (See RFC2821 184.108.40.206) (more…)
2015-03-05 11:43:41 fixed_login authenticator failed for (ispip.net) ([XX.XX.XX.XX]) [YY.YY.YY.YY]: 535 Incorrect authentication data (firstname.lastname@example.org)
In cPanel Exim servers, especially ones enabled with SMTP authentication, “535 Incorrect authentication data” is a common error message seen in mail logs. (more…)
Your server has unexpectedly terminated the connection. Possible causes for this include server problems, network problems, or a long period of inactivity. Subject 'Test mail', Account: 'mail.mydomain.net', Server: 'mail.mydomain.net', Protocol: SMTP, Port: 25,
Secure(SSL): No, Socket Error: 10053, Error Number: 0x800CCC0F
One of the common category of mail issues are those that result from failed client-server connection. Here we’ll go through the reasons why this error is returned in cPanel servers, how to identify the issues, and how to resolve them. (more…)
Now almost every webmaster uses a mobile device to check and reply to their business mails, but the increased mobility presents an issue of mails going out of sync between the various devices they use.
Engineers in our help desk support team often receive requests to locate missing mails sent from mobile devices. This is mostly reported by iPhone and iPad users, and is caused by differing naming conventions for the “sent” mail folder in different mail clients.
Increment Connection Ratelimit - ispip.net (local.home) [XX.XX.XX.XX]:61647 because of RBL match
JunkMail rejected - ispip.net (local.home) [XX.XX.XX.XX]:61647 is in an RBL, see http://www.spamhaus.org/query/bl?ip=XX.XX.XX.XX
SMTP connection from ispip.net (local.home) [XX.XX.XX.XX]:61647 I=[YY.YY.YY.YY]:465 closed by DROP in ACL
Do your customers report this error frequently? This happens when your customer’s ISP is blacklisted, leading to your customer’s mail being bounced. (more…)
Task ‘email@example.com – Sending’ reported error (0x80042109) : ‘Outlook cannot connect to your outgoing (SMTP) e-mail server. If you continue to receive this message, contact your server administrator or Internet service provider (ISP).’
If you are a cPanel/WHM web host, this would be a common error reported by your customers who use Outlook.
A one-size-fit-all solution is not possible for this error as the issue might be in the PC/Laptop, at the ISP or even at your server.
Help desk support services at Bobcares engage each web master on a step-by-step trouble shooting process, which determines exactly where the issue is, and solves the specific issue that caused the error. Here’s a quick run down on the various issues that can cause Outlook error 0x80042109. (more…)