How to figure out the SMTP server host

Question

I am using SMTP to send emails by PHP  My client has a shared hosting   I created an email account there   There is no information available about what will be the SMTP server for this account  I have tried  smtp domainname com  But it s not able to connect    How can I figure out my SMTP server host  any idea

User · Accepted Answer

You could send yourself an email an look in the email header  In Outlook  Open the mail  View- Options  there is  Internet headers

User · Answer

this really is a question for Serverfault  Windows   Open up a command prompt  CMD exe  Type nslookup and hit enter Type set type MX and hit enter Type the domain name and hit enter  for example  google com The results will be a list of host names that are set up for SMTP  Linux   Open a command prompt Type dig domain name MX and hit enter where domain name is the domain you are trying to find out the smtp server for   If you do not get any answers back from your dns server  there is a good chance that there isn t any SMTP Servers set up for that domain  If this is the case  do like other s have suggested and call the hosting companies tech support

User · Answer

Quick example   On Ubuntu  if you are interested  for instance  in Gmail then open the Terminal and type   nslookup -q mx gmail com

User · Answer

generally smtp servers name are smtp yourdomain com or mail yourdomain com open command prompt try to run following two commands    gt ping smtp yourdomain com  gt ping mail yourdomain com   you will most probably get response from any one from the above two commands and that will be your smtp server  If this doesn t work open your cpanel -- gt  go to your mailing accounts --  gt  click on configure mail account --  gt  there somewhere in the page you will get the information about your smtp server  it will be written like this way may be    Incoming Server     mail yourdomain com IMAP Port  --- POP3 Port  --- Outgoing Server     mail yourdomain com SMTP Port  ---

User · Answer

Email tech support at your client s hosting provider and ask for the information

User · Answer

You can use the dig host command to look up the MX records to see which mail server is handling mails for this domain   On Linux you can do it as following for example      host google com google com has address 74 125 127 100 google com has address 74 125 67 100 google com has address 74 125 45 100 google com mail is handled by 10 google com s9a2 psmtp com  google com mail is handled by 10 smtp2 google com  google com mail is handled by 10 google com s9a1 psmtp com  google com mail is handled by 100 google com s9b2 psmtp com  google com mail is handled by 10 smtp1 google com  google com mail is handled by 100 google com s9b1 psmtp com     as you can see  google has quite a lot of mail servers   If you are working with windows  you might use nslookup     or try some web tool  e g  that one  to display the same information   Although that will only tell you the mail server for that domain  All other settings which are required can t be gathered that way  You might have to ask the provider

User · Answer

To automate the answer of  Jordan S  Jones at WIN DOS command-line   Put this in a batch file named  getmns bat  get mail name server     echo off if   1    goto USAGE echo set type MX gt mnscmd txt echo  1 gt  gt mnscmd txt echo exit gt  gt mnscmd txt nslookup lt mnscmd txt gt mnsresult txt type mnsresult txt del mnsresult txt goto END  USAGE echo usage  echo  0 domainname ext  END echo    For example   getmns google com   output   google com      MX preference   20  mail exchanger   alt1 aspmx l google com google com      MX preference   10  mail exchanger   aspmx l google com google com      MX preference   50  mail exchanger   alt4 aspmx l google com google com      MX preference   40  mail exchanger   alt3 aspmx l google com google com      MX preference   30  mail exchanger   alt2 aspmx l google com  alt4 aspmx l google com internet address   74 125 25 27 alt3 aspmx l google com internet address   173 194 72 27 aspmx l google com      internet address   173 194 65 27 alt1 aspmx l google com internet address   74 125 200 27 alt2 aspmx l google com internet address   64 233 187 27   For example to pipe the result again into a file do   getmns google com  gt  google mns txt    -D

[smtp] How to figure out the SMTP server host?

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