Too many syntax or protocol error

furry001

• April 11, 2015 16:14

Hello all. I was hoping that someone could help with this issue (or at least explain what's causing it). One of my customers cannot connect to his email and checking the exim_rejectlog shows "too many syntax or protocol errors (last command was "?:?8?^N?^M>^Y?^\?^K?^L?^[?^X? ?") It's only affecting this one customer and he is using one ip address to connect (so I'm pretty sure it's not an SMTP server attack). It's got me stumped. Is it my server or is it at the customer end? Thanks and apologies if this has been asked before (I found a few threads asking about this with multiple ip addresses but not with just one). Furry.

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  dynaweb

  • April 12, 2015 04:37

  Hello all. I was hoping that someone could help with this issue (or at least explain what's causing it). One of my customers cannot connect to his email and checking the exim_rejectlog shows "too many syntax or protocol errors (last command was "?:?8?^N?^M>^Y?^\?^K?^L?^[?^X? ?") It's only affecting this one customer and he is using one ip address to connect (so I'm pretty sure it's not an SMTP server attack). It's got me stumped. Is it my server or is it at the customer end? Thanks and apologies if this has been asked before (I found a few threads asking about this with multiple ip addresses but not with just one). Furry.

  
  When you say that he "cannot connect" to his email, what exactly do you mean? Is he sending or receiving? What protocol and program is being used? Also I have seen issues with this and login credentials that are being copied/pasted into the fields. Try having him hand type in his name, user, and password and see if that helps.

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  furry001

  • April 12, 2015 07:12

  Thanks for the reply. I know he is using a version of Outlook but I'm not entirely sure which one. Outlook just says "connection error" (or at least that's what the customer tells me - difficult to ascertain exactly as he isn't technically minded) I will ask him to manually input his name, user and password to see if it clears the problem.

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  cPanelMichael

  • April 14, 2015 18:15

  Hello, Feel free to update us with the outcome after the user updates their login credentials. Thank you.

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  furry001

  • April 14, 2015 20:06

  I will do, if the customer comes back to me. No response so far.

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  furry001

  • April 28, 2015 12:04

  Still not heard from the customer, although I note that the error messages have now stopped appearing in the exim log so he must have sorted it

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  cPanelMichael

  • April 28, 2015 16:44

  I am happy to see the issue is no longer occurring. Thank you for updating us with the outcome.

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