[Skip to main content](#vessel-content) # Answering online query ## - **[mohairbears](/forum/user/916-mohairbears "View mohairbears's Profile")** - [![mohairbears's Avatar](https://www.hikashop.com/media/kunena/core/svg/person.svg)](/forum/user/916-mohairbears "View mohairbears's Profile") Topic Author - [ Offline](/forum/user/916-mohairbears) Less More - Posts: 610 - Thank you received: 13 - 8 months 2 weeks ago - 8 months 2 weeks ago [\#370586](#370586) by [mohairbears](/forum/user/916-mohairbears "View mohairbears's Profile") *[Answering online query](/forum/25-install-update/910137-answering-online-query#370586 "-- HikaShop version -- : 6.3 -- Joomla version -- : 5 -- PHP version -- : 8.2 **UPDATE** HAVE BEEN DOING SOME MORE TESTING AND ALL APEARS TO BE OK? IT WAS JUST THAT ONE QUERY? Hi, Got another issue. When trying to answer a question generated from 'contact us for more information' I get an email response of: Your message did not reach some or all of the intended recipients. Subject: Query Sent: 25/02/2026 09:51 The following recipient(s) cannot be reached: 'xxxxxxxx' on 25/02/2026 09:51 name x out 503 Valid RCPT command must precede DATA Using PHP mail, test mail works ok, other system emails are going out ok?")* was created by *[mohairbears](/forum/user/916-mohairbears "View mohairbears's Profile")* -- HikaShop version -- : 6.3 -- Joomla version -- : 5 -- PHP version -- : 8.2 **UPDATE** HAVE BEEN DOING SOME MORE TESTING AND ALL APEARS TO BE OK? IT WAS JUST THAT ONE QUERY? Hi, Got another issue. When trying to answer a question generated from 'contact us for more information' I get an email response of: Your message did not reach some or all of the intended recipients. Subject: Query Sent: 25/02/2026 09:51 The following recipient(s) cannot be reached: 'xxxxxxxx' on 25/02/2026 09:51 name x out 503 Valid RCPT command must precede DATA Using PHP mail, test mail works ok, other system emails are going out ok? Last edit: 8 months 2 weeks ago by [mohairbears](/forum/user/916-mohairbears "View mohairbears's Profile"). Please [Log in](/login?return=aHR0cHM6Ly93d3cuaGlrYXNob3AuY29tL2ZvcnVtLzI1LWluc3RhbGwtdXBkYXRlLzkxMDEzNy1hbnN3ZXJpbmctb25saW5lLXF1ZXJ5P3RtcGw9bWFya2Rvd24=) or [Create an account](/component/users/registration?Itemid=101) to join the conversation. - **[nicolas](/forum/user/63-nicolas "View nicolas's Profile")** - [![nicolas's Avatar](https://www.hikashop.com/media/kunena/avatars/resized/size144/users/avatar63.png?1793428657)](/forum/user/63-nicolas "View nicolas's Profile") - [ Away](/forum/user/63-nicolas) Less More - Posts: 86363 - Thank you received: 14296 - - 8 months 2 weeks ago - 8 months 2 weeks ago [\#370587](#370587) by [nicolas](/forum/user/63-nicolas "View nicolas's Profile") Replied by *[nicolas](/forum/user/63-nicolas "View nicolas's Profile")* on topic *[Answering online query](/forum/25-install-update/910137-answering-online-query#370587 "-- HikaShop version -- : 6.3 -- Joomla version -- : 5 -- PHP version -- : 8.2 **UPDATE** HAVE BEEN DOING SOME MORE TESTING AND ALL APEARS TO BE OK? IT WAS JUST THAT ONE QUERY? Hi, Got another issue. When trying to answer a question generated from 'contact us for more information' I get an email response of: Your message did not reach some or all of the intended recipients. Subject: Query Sent: 25/02/2026 09:51 The following recipient(s) cannot be reached: 'xxxxxxxx' on 25/02/2026 09:51 name x out 503 Valid RCPT command must precede DATA Using PHP mail, test mail works ok, other system emails are going out ok?")* Hi, The key error is: 503 Valid RCPT command must precede DATA This is an SMTP protocol error meaning the mail server rejected the email because the RCPT TO (recipient) command wasn't properly sent before the DATA command. In other words, the server doesn't know who to deliver to before the message body is being transmitted. Common causes: 1. Invalid or empty recipient email address: The "reply to" address from the contact form query might be malformed or missing, so the SMTP server has no valid recipient. 2. SMTP server authentication/configuration: The Joomla mail settings (Global Configuration > Server > Mail) may be misconfigured: wrong SMTP host, port, or authentication credentials. 3. SMTP server rejecting the sender: Some servers require the sender domain to match the authenticated account, and reject the sequence otherwise. From what you're saying, it seems that the email address of that user is just invalid. Last edit: 8 months 2 weeks ago by [nicolas](/forum/user/63-nicolas "View nicolas's Profile"). Please [Log in](/login?return=aHR0cHM6Ly93d3cuaGlrYXNob3AuY29tL2ZvcnVtLzI1LWluc3RhbGwtdXBkYXRlLzkxMDEzNy1hbnN3ZXJpbmctb25saW5lLXF1ZXJ5P3RtcGw9bWFya2Rvd24=) or [Create an account](/component/users/registration?Itemid=101) to join the conversation. 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