Please whitelist cPanel in your adblocker so that you’re able to see our version release promotions, thanks!

The Community Forums

Interact with an entire community of cPanel & WHM users!

Not connect to SMTP

Discussion in 'E-mail Discussion' started by glowndark, Nov 19, 2009.

  1. glowndark

    glowndark Registered

    Joined:
    May 19, 2007
    Messages:
    3
    Likes Received:
    0
    Trophy Points:
    151
    I have a problem with sending e-mail from the mail client. In e-mail client I have about 5 accounts are automatically checked every 10 minutes. e-mails can be obtained from mail client, but when trying to send out a message not connect to SMTP server. This error sending appear only rarely. (not a problem with the internet). The rest of the time everything works ... Where could be the problem?
     
    #1 glowndark, Nov 19, 2009
  2. cPanelDon

    cPanelDon cPanel Quality Assurance Analyst
    Staff Member

    Joined:
    Nov 5, 2008
    Messages:
    2,544
    Likes Received:
    10
    Trophy Points:
    268
    Location:
    Houston, Texas, U.S.A.
    cPanel Access Level:
    DataCenter Provider
    Twitter:
    Please ensure that SMTP authentication is enabled for each configured e-mail account within the mail client software; this is where your mail client authenticates using an e-mail account username and password when sending via SMTP.
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
    #2 cPanelDon, Nov 19, 2009
  3. glowndark

    glowndark Registered

    Joined:
    May 19, 2007
    Messages:
    3
    Likes Received:
    0
    Trophy Points:
    151
    As I said in the beginning, when start the mail client everything works, I can send from all accounts, so the problem is not with autorization of SMTP.
    Problem occurs after 1-2 hours. Then from any of the accounts can not send e-mail. I tried after the problem occurs change my IP (it's dynamic) occur after change IP again I can send e-mail.
    So I think for some reason after a certain time, IP is blocked from my server and so I can not send e-mails. Mail client is set to check for new mails every 10 minutes I did not send many mails, 2-3 per hour ...
     
    #3 glowndark, Nov 20, 2009
  4. InstaCarma_Tech

    InstaCarma_Tech Well-Known Member

    Joined:
    Apr 22, 2009
    Messages:
    227
    Likes Received:
    1
    Trophy Points:
    68
    It seems that the IP is getting blocked in the server firewall. You can find out the reason from the logs. If you do not have access to them then contact your host. They will be able to tell you the exact reason and resolve the issue.
    Btw, which firewall is being used on the server?
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
    #4 InstaCarma_Tech, Nov 20, 2009
  5. votethehost.com

    votethehost.com Active Member

    Joined:
    Oct 2, 2009
    Messages:
    26
    Likes Received:
    0
    Trophy Points:
    51
    Location:
    Chicago
    There is option in csf firewall to block the IP on failure logins. I think one or some of your configured mail account password is wrong Every 10 mins your email client is trying to login to server with that wrong password. After few failure logins firewall is blocking you for 30 mins (by default) and then your IP is released.

    I would suggest you to recheck that you have set correct password for ALL mail accounts.
     
    #5 votethehost.com, Nov 20, 2009
(You must log in or sign up to post here.)
Loading...
Similar Threads - connect SMTP
  1. Ahamed Husain

    Failing to connect smtp server

    Ahamed Husain, Nov 20, 2018, in forum: E-mail Discussion
    Replies:
    5
    Views:
    299
    cPanelMichael
    Nov 27, 2018
  2. Rafael Gomes

    SOLVED SMTP connection from - lost while reading message data

    Rafael Gomes, Nov 16, 2018, in forum: E-mail Discussion
    Replies:
    3
    Views:
    186
    cPanelMichael
    Nov 20, 2018
  3. sparek-3

    SMTP Connection - lost while reading message data

    sparek-3, Nov 8, 2018, in forum: E-mail Discussion
    Replies:
    10
    Views:
    262
    Al Gilson
    Nov 15, 2018
  4. emcarpanezi1995

    Error smtp cliente connect

    emcarpanezi1995, Oct 8, 2018, in forum: E-mail Discussion
    Replies:
    1
    Views:
    372
    cPanelLauren
    Oct 9, 2018
  5. Samet Chan

    SMTP Connection reset by peer issue

    Samet Chan, Aug 16, 2018, in forum: E-mail Discussion
    Replies:
    8
    Views:
    551
    Samet Chan
    Aug 17, 2018

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Accept Learn More...
    Dismiss Notice