Solved

SMTP RCPT error

Posted on 2009-07-16
3
1,497 Views
Last Modified: 2013-11-30
I get bounce back message "Grammar error reported for RCPT command: Error Command Code 501 was encountered waiting for a RCPT response (501  #5.5.2 syntax error 'RCPT TO:"

In the log there is this command: RCPT TO: <user@domain.com>

From what I've read really quick there shouldn't be a space, it should look like this:

RCPT TO:<user@domain.com>

Does this mean that my mail server is adding the space and the receiving server is rejecting it then?  Is there any way I can fix this?  We are using ISMail EP
0
Comment
Question by:sharkbot221984
  • 2
3 Comments
 
LVL 12

Accepted Solution

by:
kevin_u earned 500 total points
Comment Utility
A space there is normally not a problem.  Maybe something else is in there?  tab?  maybe a trailing space (i remember a mail server that had a bug in it when there was a trailing space).  I'd call support for ISMail.  It may simply be a problem with the destination server.  You may want to contact them as well.
0
 
LVL 8

Author Comment

by:sharkbot221984
Comment Utility
ISMail is defunct no support there.  I agree the extra space shouldn't be a problem.  I did send 2 more messages and the mail logs show that the destination server gave 250 OK for the RCPT command on those, no bounce back (yet).  I did a tracert to the destination domain and it timed out at their ISP I think.  Not sure that there is anything else to be done, other emails are flowing in/out normally.
0
 
LVL 8

Author Closing Comment

by:sharkbot221984
Comment Utility
The extra space is always present in the log files and other servers receive our mail fine.  The extra space I doubt is the issue.
0

Featured Post

Do You Know the 4 Main Threat Actor Types?

Do you know the main threat actor types? Most attackers fall into one of four categories, each with their own favored tactics, techniques, and procedures.

Join & Write a Comment

Microsoft has released various new features which are capable of handling various tasks. One of these tasks is ‘Migration from pop3 to Exchange Server’. Pop3 data stores various data along mailboxes like contacts, tasks, etc. So, it becomes the need…
It’s a strangely common occurrence that when you send someone their login details for a system, they can’t get in. This article will help you understand why it happens, and what you can do about it.
In this video we show how to create a mailbox database in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center. Navigate to the Servers >> Data…
The purpose of this video is to demonstrate how to set up a Mailchimp Template which will let the user create a uniform look for all of their campaigns. This will be demonstrated using a Windows 8 PC. Mailchimp will be used. Log into your Mail…

772 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

10 Experts available now in Live!

Get 1:1 Help Now