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Email Error 5.2.1

More Craigslist spam: Compromised Gmail accounts reply to Craigslist.org ads Categories Botnets Company News Email Security Trends How To Legal News outbound spam Phishing Privacy Product Product Updates SMTP Relay Technical Please try sending your message again - psmtp 421 Process restarting, please try again - psmtp 421 please try again - psmtp 421 Timeout - psmtp 451 Archive storage failure - It could also be that the delivery directory on the Virtual server has exceeded its limit. (Default 22 MB) 4.3.1 Not enough disk space on the delivery server. Sometimes running RUS (Recipient Update Service) cures this problem. navigate here

If so then DMARC may be your problem, if not than it's probably something else. Question from Mark Twain's quote Clearing all CellTags in a notebook Why are so many metros underground? In cases where the problem lies with your message security service, consult the If the bounced messages contain SMTP reply codes that were not generated by the message security service, then Go here for troubleshooting steps.

Check SMTP Virtual Server Access Tab. Codes generated by the message security service are specific to components of the service, and can indicate things like: The intended recipient was not registered with the service The message was It is however interesting to note, that only the AOL customer which is put in the Reply-To field does not receive the mail.

Perhaps an anonymous user is trying to send mail to a distribution list. Skip to Main Content Skip to Navigation Questions? Else it could be a permissions problem. Please try again later.

Larry Karnis, Friday, January 17, 2014, 18:38: Karl Timmermans of Microsoft found this article interesting enough to link back to it. Kindest Regards, Scott M Reply vub engg. Three rings to rule them all Topology and the 2016 Nobel Prize in Physics If indicated air speed does not change can the amount of lift change? http://answers.microsoft.com/en-us/msoffice/forum/msoffice_outlook-mso_windows8/521-521-aol-will-not-accept-delivery-of-this/65387677-e3fd-4b9b-a223-5db0a9cb3649 You could also sign up for MailChannels Cloud, which is a cloud-based SMTP relay service that detects and blocks spam.

So the problem is probably caused by something else.... You'll need to enable TLS security, and provide your username and password in order to use Gmail's SMTP server. What this means is that if your PHP code attempts to send an email that claims to be FROM a Yahoo.com or AOL.com address, it will not be accepted by the In it, you'll get: The week's top questions and answers Important community announcements Questions that need answers see an example newsletter By subscribing, you agree to the privacy policy and terms

Even if it's not "spam" per se, if it's something that even one AOL user might be complaining about, that could be the cause of all the trouble.   Have you Check out these other articles: Bounce Management Overview Viewing Bounce Reports How to Keep Your Email Lists Sparkling Clean Need more? SMTP Reply Codes Generated by the Message Security Service The message security service generates SMTP reply codes of its own, and also passes SMPT codes between sending and receiving Mail Transfer more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed

See Microsoft TechNet article: 321721 Sharing SMTP. http://csimonitoring.com/email-error/email-error-553-5-3-0.php http://postmaster-blog.aol.com/2014/04/22/aol-mail-updates-dmarc-policy-to-reject/ ...it seems as though AOL are saying "we don't like the way that you send emails, sorry to inconvenience you..." If anyone has any experience or specific insight into how If it persists, you will also a 5.4.x status code error. 4.4.2 The server started to deliver the message but then the connection was broken. 4.4.6 Too many hops. Attempt to resend the message.

Would you like to ask a question about this page? Generated Sat, 08 Oct 2016 11:37:23 GMT by s_ac4 (squid/3.5.20) current community chat Stack Overflow Meta Stack Overflow your communities Sign up or log in to customize your list. For example, verify that the SMTP format is correct. his comment is here It triggers off of the dumbest things.

DMARC policies are set in DNS records for every domain, you can use this tool to check the DMARC policy for your FROM domain. Make sure it matches the SMTP publishing rule. 5.7.4 Extra security features not supported. Also, use square brackets in the IP address [] You can get this same NDR error if you have been deleting routing groups. 4.6.5 Multi-language situation.

In our example bounce-back error above the reason the message has failed is because the server forRemoteDomains.com has a fixed message size limit.

Check receiving server connectors. 4.4.9 A DNS problem. If you do so, please include this problem report. https://dmarcian.com/dmarc-inspector/aol.com share|improve this answer answered Jul 23 '14 at 10:23 Ty H. 56036 The FROM is my .co.uk domain. HELO 250, 421, 500, 501, 504, 521 EHLO 250, 421, 500, 501, 504, 521 MAIL 250, 421, 451, 452, 500, 501, 552 RCPT 250, 251, 421, 450, 451, 452, 500, 501,

Possibly the user was moved to another server in Active Directory. Thanks, Andy Cooper Reply Arn Staff 34,964 Points 2014-07-15 12:25 pm Hello Andy Cooper, The solution depends on the error and yes, many of these will require action by either the Check the Smart host, or check your DNS. http://csimonitoring.com/email-error/email-error-554-5-7-1.php RFC 1985 EXPN Expand RFC 2821 HELO Hello RFC 2821 HELP Help RFC 2821 MAIL Mail RFC 2821 NOOP No operation RFC 2821 ONEX One message transaction only.

I'm not exactly sure what you are asking, but the maximum email size limit for our servers is 50MB.