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How to resolve “Sender verify failed” SMTP mail error in cPanel/WHM Exim servers

by Reeshma Mathews | Feb 21, 2017 | cPanel

SMTP error from remote mail server after RCPT TO:<[email protected]>: host mx.server.com [xxx.xxx.xxx.xxx]: 550-Verification failed for <[email protected]> 550-No Such User Here 550 Sender verify failed Bobcares provides website management services to...

2 reasons why you get “530 Login authentication failed” in your cPanel Pure-ftpd server and how to fix it

by Reeshma Mathews | Feb 20, 2017 | cPanel, FTP

In our role as Website Support engineers for online businesses, managing FTP servers and resolving the related errors, is a task we usually perform. “530 Login authentication failed” is a common error reported by users in cPanel Pure-ftpd servers. This...

cPanel IP block – How to resolve and prevent IP blocks in cPanel/WHM servers

by Reeshma Mathews | Feb 17, 2017 | cPanel

Web hosts can never shun server security! Majority of them have setup firewalls such as CSF/LFD to protect their cPanel servers by blocking IP addresses of attackers or malicious users. But we’ve seen many cases where these firewall settings are not proper,...

Blocking spoofed mails going out from your cPanel/WHM server to protect it from blacklists

by Reeshma Mathews | Feb 16, 2017 | cPanel

Outgoing spam is a major head ache for many web hosts. Spammers use compromised websites or mail accounts to send thousands of spam mail within a few mins. By the time the web host comes to know about it, the server IP would be blacklisted (eg. SpamHaus SBL), and...

How to fix error “454 4.7.1 Relay access denied” in Postfix mail servers

by Reeshma Mathews | Feb 9, 2017 | Server Management

454 4.7.1 <[email protected]>: Relay access denied This is a commonly seen email failure error by web hosts, website owners and server owners who run Postfix mail server. 454 error usually happens while sending to and receiving from external domains. In our role...

Fix 554 5.7.1 Relay Access Denied – SMTP Error Solutions

by Visakh S | Feb 8, 2017 | Plesk

Stuck with the “Fix 554 5.7.1 Relay Access Denied” error?  In our role as Website Support Specialists for online businesses, we resolve hundreds of email issues every day. A commonly encountered email bounce error faced by web hosts, website owners and...

Gmail blacklist removal for your mail servers

by Reeshma Mathews | Feb 8, 2017 | Technical Support

550-5.7.1 [203.**.**.**] Our system has detected an unusual rate of 550-5.7.1 unsolicited mail originating from your IP address. To protect our 550-5.7.1 users from spam, mail sent from your IP address has been blocked. Many often, you’d have had your customers...

How to prevent SpamHaus SBL (Spamhaus Block List) blacklisting in web hosting servers

by Reeshma Mathews | Feb 7, 2017 | Server Management, Technical Support

554 5.7.1 Service unavailable; Client host [154.0.***.**] blocked using zen.spamhaus.org; https://www.spamhaus.org/sbl/query/SBL289647 SMTP error from remote mail server after pipelined DATA: 550-197.242.**.*** listed at zen.spamhaus.org You’d seen these error...

10 tips to prevent database corruption in your web hosting servers

by Reeshma Mathews | Feb 6, 2017 | Server Administration, Technical Support

Many websites run database-driven applications, and a single missing entry in these tables can lead to website downtime. Database corruption is an alarming scenario for webhosts, who end up spending time and effort repairing and restoring their customer databases. At...

Prevent SpamHaus PBL (Policy Block List) blacklisting in web hosting servers

by Visakh S | Feb 4, 2017 | Technical Support

554 5.7.1 Service unavailable; Client host [203.0.113.XXX] blocked using zen.spamhaus.org; https://www.spamhaus.org/pbl/query/PBL289647 554 mysev mysmtp 203.0.113.XXX is on the Spamhaus PBL Please visit: http://www.spamhaus.org/query/bl?ip=203.0.113.XXX If...
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