I have a SMTP account by hostgator. It has been working OK for a few years. in the last week all emails sent to gmail accounts are bounced with the following message:
Could not deliver message to the following recipient(s): Failed
Recipient: [email protected] Reason: Remote host said: 421 4.7.0
Senders Guidelines. rx5si6064874pab.151 - gsmtp -- The header and
top 20 lines of the message follows -- Received: from COMPUTERNAME
(cpe-184-152-65-14.nyc.res.rr.com [184.152.65.14]) by
srv1.MYDOMAIN.com with SMTP; Wed, 30 Dec 2015 20:20:02 +0000
MIME-Version: 1.0 From: [email protected] To:
=?utf-8?Q?=D7=92=D7=9C=D7=99=D7=A7_=D7=95=D7=95=D7=90=D7=9C=D7=A3?= Cc: [email protected] Date: 30 Dec 2015 15:20:00
-0500 Subject: Hello Content-Type: multipart/alternative; boundary=-- boundary_24_202cb606-d866-4f0c-8099-34ebd832de7f
emails sent to other domains (aol,yahoo,etc...) arrive safely. the issue is only to gmail.
i couldnt find much info online. most posts refer to a bulk sending message. but these emails are not bulk. nor is there any reference to bulk in the error response
in the smtp logs from hostgator/smartermail i dont find anything interesting. in fact it seems to be all-ok.
heres a sample
01:46:33 [99.99.99.99][57058974] rsp: 220 srv1.MYDOMAIN.com
01:46:33 [99.99.99.99][57058974] connected at 1/4/2016 1:46:33 AM
01:46:33 [99.99.99.99][57058974] cmd: EHLO COMPUTERNAME
01:46:33 [99.99.99.99][57058974] rsp: 250-srv1.MYDOMAIN.com Hello [99.99.99.99] 250-SIZE 250-AUTH LOGIN CRAM-MD5 250 OK
01:46:33 [99.99.99.99][57058974] cmd: AUTH login aW5mb0BqdWRhaWNhcdhcmUuY29t
01:46:33 [99.99.99.99][57058974] rsp: 334 UGFzc3dvcmQ6
01:46:33 [99.99.99.99][57058974] rsp: 235 Authentication successful
01:46:33 [99.99.99.99][57058974] Authenticated as [email protected]
01:46:33 [99.99.99.99][57058974] cmd: MAIL FROM:
01:46:33 [99.99.99.99][57058974] rsp: 250 OK Sender ok
01:46:33 [99.99.99.99][57058974] cmd: RCPT TO:
01:46:33 [99.99.99.99][57058974] rsp: 250 OK Recipient ok
01:46:33 [99.99.99.99][57058974] cmd: RCPT TO:
01:46:33 [99.99.99.99][57058974] rsp: 250 OK Recipient ok
01:46:33 [99.99.99.99][57058974] cmd: DATA
01:46:33 [99.99.99.99][57058974] rsp: 354 Start mail input; end with .
01:46:34 [99.99.99.99][57058974] rsp: 250 OK
01:46:34 [99.99.99.99][57058974] Data transfer succeeded, writing mail to 97641527.eml
01:47:39 [99.99.99.99][57058974] cmd: QUIT
01:47:39 [99.99.99.99][57058974] rsp: 221 Service closing transmission channel
01:47:39 [99.99.99.99][57058974] disconnected at 1/4/2016 1:47:39 AM
the official google page here https://support.google.com/a/answer/3726730?hl=en has several error descriptions. but none match what i am getting "Senders Guidelines"
what can i do about this? where can i look? any links/leads/pointers?
thanks!