When I send an email from my server i get the message The recipient does not exist, but this is not true.

Question asked by felix avendano - 12/12/2014 at 6:16 AM

Unanswered

This must be a problem of my installation because I cant send or receive emails from any account I create.

I have Plesk 12 and smarter mail professional 13.1

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Steve Reid Replied

12/12/2014 at 6:34 AM

DNS issue?

felix avendano Replied

12/12/2014 at 6:49 AM

I think it is, but I tried lot of things and I can´t put this to work. I have a domain yiqi.es in a company that brings DNS services. There is a web in this URL that i can acces and is in the same server as smarter mail. I´ve changed the MX register to yiqi.es, yiqi.es is the domain name I have in the domains setting of smartermail. I don´t know if there is something else I can check out

Bruce Barnes Replied

12/12/2014 at 7:28 AM

Post your domain name and we can do some external testing.

Bruce Barnes ChicagoNetTech Inc brucecnt@comcast.net Phonr: (773) 491-9019 Phone: (224) 444-0169 E-Mail and DNS Security Specialist Network Security Specialist Customer Service Portal: https://portal.chicagonettech.com Website: https://www.ChicagoNetTech.com Security Blog: http://networkbastion.blogspot.com/ Web and E-Mail Hosting, E-Mail Security and Consulting

Steve Reid Replied

12/12/2014 at 7:44 AM

He posted it already: yiqi.es

Bruce Barnes Replied

12/12/2014 at 8:54 AM

Port 25 is not available from outside:

Steve Reid Replied

12/12/2014 at 9:28 AM

Yeah I was also thinking by the look of the rDNS it seems it may be hosted on a home connection.

felix avendano Replied

12/12/2014 at 11:00 AM

I´ve opened port 25 but the problem is still there

felix avendano Replied

12/12/2014 at 11:04 AM

actually I`ve opened ports 110 and 143 also

Bruce Barnes Replied

12/12/2014 at 12:03 PM

Is this a residential or commercial Internet account? Who is your Internet provider? Many residential providers completely block port 25, which must be open for MX servers.

Steve Reid Replied

12/12/2014 at 12:52 PM

I did an SMTP test and his server seems to respond now.

Richard Frank Replied

12/13/2014 at 4:39 PM

if port 25 is shut, you don't get the message that the user does not exist.

Steve Reid Replied

12/13/2014 at 10:42 PM

In fact his port 25 was initially blocked and he was getting the error posted.

Richard Frank Replied

12/15/2014 at 1:41 AM

probably he was connect via intranet. You just do not get .. "user does not exist" when there is no mailserver listening at all @ 25.

But I see there is no problem for him anymore.

A test on postmaster works now

220 tecandweb.com

helo me

250 tecandweb.com Hello [80.242.238.134]

mail from: richard@soko.nl

250 OK Sender ok

rcpt to: postmaster@yiqi.es

250 OK

Recipient ok

data

354 Start mail input; end with .

bla .

250 OK

I guess he is fine now.

felix avendano Replied

12/29/2014 at 1:36 AM

I´m not. I´m having the same issue. The extrange thing is that if I send emails from a web using an SMTP account that is external, everything Works fine. So port 25 is working fine, I can receive mails in Servicios@yiqi.es, but I cannot send anything through this account. I have allways the same error.

Dan Horne Replied

1/5/2015 at 5:18 PM

Check SMTP Authentication...

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