DNS issue

[Mohamed_kamal]

i have fortimail 200d and fortigate 200D

when i send any mail replay me postmaster is (reason: 550 *** The HELO for IP address 41.38.52.75 was '[41.38.52.75]' (valid but not recommended syntax )

i contact with senderbase team to know why added my IP to blacklist and replay me that 

To this end, we are seeing reports of HELO strings which do not match the PTR / rDNS of the IP. One of the HELO string we are seeing  “[41.38.52.75]”  which is not exact matches to the PTR of the IP 41.38.52.75  (mail.elashrygroup.com).

how to resolve ip to HELO  ? 

please  help me 

[Mohamed_kamal]

yes dns is mail.elashrygroup.com and no error logs if spf record is wrong making this error or no i need to match HELO or resolve ip to HELO name

[Bromont_FTNT]

for the telnet test try:

exe telnet  alt1.gmail-smtp-in.l.google.com:25

then type 

ehlo mail.elashrygroup.com

[Mohamed_kamal]

parsing error

[emnoc]

This t-shooting 101, but here  the 2x types of hello ( normal and extended  aka EHLO )

Your hostname present needs to match  DNS. if that matches, than you can go down the list of the next items;

[ul]

SPF

greylisting issues

are your BLACKLISTED [/ul]

http://socpuppet.blogspot...ng-blocked-on-rbl.html

[emnoc]

FWIW, your not on any  common RBLs

http://www.anti-abuse.org/multi-rbl-check-results/?host=mail.elashrygroup.com

[Mohamed_kamal]

how to create best spf record ? another question : how to make mta match HELO ? i'm not blacklisting and greylist

[Mohamed_kamal]

how to create best SPF record ?

[Bromont_FTNT]

SPF record is a TXT entry in DNS for your domain. 

According to your config your MTA helo/ehlo looks ok.... 

Are you sure you can't run:

exec telnet  alt1.gmail-smtp-in.l.google.com:25

and:

ehlo mail.elashrygroup.com

Would like to see the results of the above command.

[Mohamed_kamal]

gmail is 

421 service not available (connection refused, too many connections)

 

Entering interactive mode. Type CTRL-D to exit.

Connection closed.

 

Connection status to alt1.gmail-smtp-in.l.google.com port 25:

	Connecting to remote host succeeded.

[Mohamed_kamal]

421 error  appeared with mails  at tab mail queue