SMTP error from remote mail server after RCPT TO:<firstname.lastname@example.org>:
host mx.server.com [xxx.xxx.xxx.xxx]: 550-Verification failed for <email@example.com>
550-No Such User Here
550 Sender verify failed
Bobcares provides website management services to website owners. Email errors are the most commonly encountered issues by the end customers.
Amongst these mail errors, ‘Sender verify failed’ is a prominent error that creates so much hassle to account owners. We’ve seen that it can be caused by issues ranging from improper file permissions to RFC non-compliance. (more…)
SMTP error from remote mail server after RCPT TO:<firstname.lastname@example.org>: 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.
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 (email@example.com)
In cPanel Exim servers, especially ones enabled with SMTP authentication, “535 Incorrect authentication data” is a common error message seen in mail logs. (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…)
In a shared web hosting environment like cPanel/WHM, Relay access denied email error is a common email issue reported by web masters. Over time, Bobcares help desk support services devised ways to resolve such issues in less than 10 minutes, and to an extend prevent these issues from happening.
Relay access denied error means, the server is refusing a mail to another server from a domain owner’s email client. The mail server is unable to confirm whether the domain owner is authorized to send emails THROUGH it. cPanel Exim email servers distinguish a valid sender when it gets a valid SMTP or POP/IMAP login from the domain user. (more…)