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SMTP error messages: too many syntax or protocol errors

Discussion in 'E-mail Discussions' started by albatroz, May 26, 2012.

  1. albatroz

    albatroz Well-Known Member

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    I see a lot of messages like this on the exim_mainlog. Why?
    Can it produce any issues with firewall blocking the source IP?


    2012-05-26 11:51:52 [9375] SMTP syntax error in "RCPT TO: <'mchavez@embutidoszimmermann.com'>" H=(COMPRAS) [190.187.29.104]:34042 I=[209.217.240.182]:25 malformed address: '> may not follow <'mchavez@embutidoszimmermann.com
    2012-05-26 11:51:52 [9375] SMTP call from (COMPRAS) [190.187.29.104]:34042 I=[209.217.240.182]:25 dropped: too many syntax or protocol errors (last command was "RCPT TO: <'mchavez@embutidoszimmermann.com'>")
    2012-05-26 11:52:34 [13436] SMTP syntax error in "RCPT TO: <'mchavez@embutidoszimmermann.com'>" H=(COMPRAS) [190.187.29.104]:34043 I=[209.217.240.182]:25 malformed address: '> may not follow <'mchavez@embutidoszimmermann.com
    2012-05-26 11:52:34 [13436] SMTP call from (COMPRAS) [190.187.29.104]:34043 I=[209.217.240.182]:25 dropped: too many syntax or protocol errors (last command was "RCPT TO: <'mchavez@embutidoszimmermann.com'>")
     
  2. Eric

    Eric Administrator
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    Howdy,

    It is probably a spammer with a misconfigured mailer script. Giving too many commands at SMTP time. Exim is really strict about SMTP transactions.

    Thanks!
     
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