E Mail Smtp Error Codes
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reply codesSometimes your SMTP server may return a particular error message. The problem is that it will generally be very cryptic, like "550 Requested action not taken: smtp server error codes mailbox unavailable" or "421 Try again later". What does these numbers mean?First of
Smtp Error Codes 554
all: not any reply code is an error. Sometimes it's just a response containing a detail about the smtp error codes and acknowledgements server or an answer to a command. Secondly: any code consist of three digits, and each conveys a particular information. The first one defines whether the server has accepted the command, smtp error codes wikipedia fulfilled an action, run into a temporary issue, encountered an error etc; the second and the third one refine the description further, stating if there's been a syntactic problem, or a connection trouble etc.Unfortunately, different servers sometimes use these codes in a different way, making the whole thing even more complicated... Anyhow, the most critical series of error messages is the 5xx one,
Smtp Error Codes Rfc
and especially the ones from 550 to 559. In particular, you will probably get a lot of 550 SMTP error codes – that is, a problem that concerns the recipient's email address.Finally, remember that it's much easier to deal with these error codes if you choose to rely on a professional SMTP server that will help you solve any issue. turboSMTP, for instance, comes with a 24/7 customer support: you can try it free and forget once for all these issues.And here's a list of the main SMTP error or reply messages, with an explanation and a tip about what to do. CODEMEANINGHOW TO SOLVE IT / WHAT TO DO101The server is unable to connect.Try to change the server's name (maybe it was spelt incorrectly) or the connection port.111Connection refused or inability to open an SMTP stream.This error normally refers to a connection issue with the remote SMTP server, depending on firewalls or misspelled domains. Double-check all the configurations and in case ask your provider.211System status message or help reply.It comes with more information about the server.214A response to the HELP command.It contains information a
Reply codes in numerical order Code Meaning 200 (nonstandard success response, see rfc876) 211 System status, or system help reply 214 Help message 220
Pop3 Error Codes
message and attempt delivery 354 Start mail input; end with
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an error message with its own code. Here's an explanation of the codes—along with a recommendation on how to fix each error. Note: In the event you need to contact your email administrator, be sure to include the error message. It contains important information. Choose the error message you received from the menu below: BL000000 BL000001 BL000010 BL000011 BL000100 BL000101 BL000110 BL000111 DM000001 ES000001 ES000010 RL000001 RL000002 421 452 550 552 554 BL000000 :: Mail to Comcast is rejected and is returned with an error message containing the code BL000000. What does this mean? Our filters have determined that email from your email server has been sent in patterns which are characteristic of spam. In an effort to protect subscribers, your email server has been blocked from sending email to the Comcast network. Mail servers are typically shared by many users so it may be the case that another party using your email server has sent spam, even if you have not.How do I get my IP removed from the blocklist?It is important that your email administrator is aware of their outbound spam problem to avoid being blocked by Comcast in the future. When contacting your email administrator, you should include the error message contained in the email which alerted you to this problem. This error message contains important information to help your email administrator resolve this issue. Removal requests can be sent to postmaster.comcast.net/block-removal-request.html and will require the IP address of the blocked email server. Requests submitted through this form are monitored 24 hours a day, 7 days a week to ensure a timely response. BL000001 :: Mail to Comcast is rejected and is returned with an error message containing the code BL000001. What does this mean? Your email could not be delivered because your sending IP address is listed on the Spamhaus Zen. This is a list of IP addresses which have been detected as sending spam and also contains dynamically assigned IP addresses which are not supposed to send email directly to email servers. Comcast uses these lists to protect its subscribers from receiving spam.How do I remediate the block?It is important that your email provider is aware of their outbound spam problem to avoid being blocked by Comcast in the future. When contacting your email provider, you should include the error message contained in the email that alerted you to this problem. This error message contains important information to help your email provider resolve this issue. To address this issue, either you or your email provider can visit the Spamhaus website by clicking here in order to request r