501 Syntactically invalid - Possible Solution?

HCL Domino Domino Forum
1

Hi,

I thought this may be useful to someone:-

SMTP mailrouting is fine for all connecting hosts apart from one server (EXIM - free linux server I believe)replying 501 syntactically invalid HELO, my W2k hostname is Server_1 (FQDN being Server_1.domain-ltd.co.uk),I have 2 options to either change the server hostname to Server1 or inform the EXIM mail server admins to add the following to their config file :-

helo_allow_chars = _

or

helo_accept_junk_hosts option

below is text extract from an exim forum site

"Thanks very much! I’ve made the change and everything seems fine.

Thanks Again

david potter

“Odhiambo G. Washington” wrote:

I’m have a problem with a particular corporate mail server connection

that is being reported as a "501 Syntactically invalid HELO

argument(s)"

SMTP<< HELO to_notes.Ellis-don.com

          ^^^^^^^

If you want to allow underscores, put in your configure file

helo_allow_chars = _

-Wash

I’m have a problem with a particular corporate mail server connection

that is being reported as a "501 Syntactically invalid HELO

argument(s)"

SMTP<< HELO to_notes.Ellis-don.com

The underscore in this HELO name is the problem. Either get the server

admin (of the Lotus server or whatever it is) to fix it, or use the

helo_accept_junk_hosts option.

Tim"

2

Subject: 501 Syntactically invalid - Possible Solution ?

Could you advise where could i locate the “config file” mention.

I have the same issue here but; if i were to change my server name i don’t know whether there would be an impact on the server.

Steve