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Reducing spam on Ubuntu


cannot send mail to postfix /w iptables linux proxypostfix smtps issuePostfix socket responses problemPostfix won't accept SASL loginsUnable to receive any emails using postfix, dovecot, mysql, and virtual domain/mailboxesPostfix: Recipient address rejected: Invalid HELO/EHLOPostfix: Helo command rejected: Host not foundContact sender via Postfix Mailer-Daemon on “Bad recipient address syntax”Postfix sender address rejected / using multiple addressesSMTP-SASL authentification doesn't work






.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty height:90px;width:728px;box-sizing:border-box;








0















I'm getting plenty of emails to postmaster@host.hostname.com



Transcript of session follows.

Out: 220 host.hostname.com ESMTP Postfix (Ubuntu)
In: EHLO mail-serv.info
Out: 250-host.hostname.com
Out: 250-PIPELINING
Out: 250-SIZE 10240000
Out: 250-VRFY
Out: 250-ETRN
Out: 250-STARTTLS
Out: 250-AUTH PLAIN LOGIN
Out: 250-AUTH=PLAIN LOGIN
Out: 250-ENHANCEDSTATUSCODES
Out: 250-8BITMIME
Out: 250 DSN
In: MAIL FROM:<mmr8hnmju5ir8xj1@ps-volga.ru>
Out: 250 2.1.0 Ok
In: RCPT TO:<elena@mysite.com>
Out: 550 5.1.1 <elena@mysite.com>: Recipient address rejected: User


I've a site hosted on my VPS whose name is mysite.com and server hostname is host.hostname.com.



What could be the problem here as I'm getting an email every minute with different to email( here elena@mysite.com)?



How to reduce this spam?










share|improve this question




























    0















    I'm getting plenty of emails to postmaster@host.hostname.com



    Transcript of session follows.

    Out: 220 host.hostname.com ESMTP Postfix (Ubuntu)
    In: EHLO mail-serv.info
    Out: 250-host.hostname.com
    Out: 250-PIPELINING
    Out: 250-SIZE 10240000
    Out: 250-VRFY
    Out: 250-ETRN
    Out: 250-STARTTLS
    Out: 250-AUTH PLAIN LOGIN
    Out: 250-AUTH=PLAIN LOGIN
    Out: 250-ENHANCEDSTATUSCODES
    Out: 250-8BITMIME
    Out: 250 DSN
    In: MAIL FROM:<mmr8hnmju5ir8xj1@ps-volga.ru>
    Out: 250 2.1.0 Ok
    In: RCPT TO:<elena@mysite.com>
    Out: 550 5.1.1 <elena@mysite.com>: Recipient address rejected: User


    I've a site hosted on my VPS whose name is mysite.com and server hostname is host.hostname.com.



    What could be the problem here as I'm getting an email every minute with different to email( here elena@mysite.com)?



    How to reduce this spam?










    share|improve this question
























      0












      0








      0








      I'm getting plenty of emails to postmaster@host.hostname.com



      Transcript of session follows.

      Out: 220 host.hostname.com ESMTP Postfix (Ubuntu)
      In: EHLO mail-serv.info
      Out: 250-host.hostname.com
      Out: 250-PIPELINING
      Out: 250-SIZE 10240000
      Out: 250-VRFY
      Out: 250-ETRN
      Out: 250-STARTTLS
      Out: 250-AUTH PLAIN LOGIN
      Out: 250-AUTH=PLAIN LOGIN
      Out: 250-ENHANCEDSTATUSCODES
      Out: 250-8BITMIME
      Out: 250 DSN
      In: MAIL FROM:<mmr8hnmju5ir8xj1@ps-volga.ru>
      Out: 250 2.1.0 Ok
      In: RCPT TO:<elena@mysite.com>
      Out: 550 5.1.1 <elena@mysite.com>: Recipient address rejected: User


      I've a site hosted on my VPS whose name is mysite.com and server hostname is host.hostname.com.



      What could be the problem here as I'm getting an email every minute with different to email( here elena@mysite.com)?



      How to reduce this spam?










      share|improve this question














      I'm getting plenty of emails to postmaster@host.hostname.com



      Transcript of session follows.

      Out: 220 host.hostname.com ESMTP Postfix (Ubuntu)
      In: EHLO mail-serv.info
      Out: 250-host.hostname.com
      Out: 250-PIPELINING
      Out: 250-SIZE 10240000
      Out: 250-VRFY
      Out: 250-ETRN
      Out: 250-STARTTLS
      Out: 250-AUTH PLAIN LOGIN
      Out: 250-AUTH=PLAIN LOGIN
      Out: 250-ENHANCEDSTATUSCODES
      Out: 250-8BITMIME
      Out: 250 DSN
      In: MAIL FROM:<mmr8hnmju5ir8xj1@ps-volga.ru>
      Out: 250 2.1.0 Ok
      In: RCPT TO:<elena@mysite.com>
      Out: 550 5.1.1 <elena@mysite.com>: Recipient address rejected: User


      I've a site hosted on my VPS whose name is mysite.com and server hostname is host.hostname.com.



      What could be the problem here as I'm getting an email every minute with different to email( here elena@mysite.com)?



      How to reduce this spam?







      ubuntu postfix






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked May 13 at 17:10









      user5858user5858

      761114




      761114




















          1 Answer
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          0














          Take your host offline and stop accepting mail entirely, I'd say, would solve the problem entirely. You're on the Internet. Having random garbage thrown at your server all day is a part of that.



          The useful tool fail2ban, normally used to ban ssh attackers, also has some postfix related jails that you can enable, which will automatically ban certain spammers based on the log entries they create.






          share|improve this answer























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            1 Answer
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            active

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            active

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            0














            Take your host offline and stop accepting mail entirely, I'd say, would solve the problem entirely. You're on the Internet. Having random garbage thrown at your server all day is a part of that.



            The useful tool fail2ban, normally used to ban ssh attackers, also has some postfix related jails that you can enable, which will automatically ban certain spammers based on the log entries they create.






            share|improve this answer



























              0














              Take your host offline and stop accepting mail entirely, I'd say, would solve the problem entirely. You're on the Internet. Having random garbage thrown at your server all day is a part of that.



              The useful tool fail2ban, normally used to ban ssh attackers, also has some postfix related jails that you can enable, which will automatically ban certain spammers based on the log entries they create.






              share|improve this answer

























                0












                0








                0







                Take your host offline and stop accepting mail entirely, I'd say, would solve the problem entirely. You're on the Internet. Having random garbage thrown at your server all day is a part of that.



                The useful tool fail2ban, normally used to ban ssh attackers, also has some postfix related jails that you can enable, which will automatically ban certain spammers based on the log entries they create.






                share|improve this answer













                Take your host offline and stop accepting mail entirely, I'd say, would solve the problem entirely. You're on the Internet. Having random garbage thrown at your server all day is a part of that.



                The useful tool fail2ban, normally used to ban ssh attackers, also has some postfix related jails that you can enable, which will automatically ban certain spammers based on the log entries they create.







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered May 13 at 17:44









                Michael HamptonMichael Hampton

                178k27325657




                178k27325657



























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