error while sending mail using git send-email

[srishti sharma]

SMTP session failed: 550 5.7.0  https://support.google.com/a/answer/6140680#mail

This is the error I am getting .

On Sun, Feb 5, 2017 at 7:23 AM, srishti sharma <srishtishar at gmail.com> wrote:
>  These are the mutt configurations
>
>    set ssl_starttls = yes
>    set ssl_force_tls = yes
>    set imap_user = srishtishar at gmail.com
>    set imap_pass = 'heuristics at 56'
>
>    set from = srishtishar at gmail.com
>    set realname = 'srishti sharma'
>    set folder = imaps://imap.gmail.com/
>    set spoolfile = imaps://imap.gmail.com/INBOX
>    set postponed = "imaps://imap.gmail.com/[Gmail]/Drafts"
>
>    set header_cache = "~/.mutt/cache/headers"
>    set message_cachedir = "~/.mutt/cache/bodies"
>    set certificate_file = "~/.mutt/certificates"
>    set smtp_url = 'smtps://smtp-relay.gmail.com'
>    set move = no
>    set imap_keepalive = 900
>
> On Sun, Feb 5, 2017 at 7:22 AM, srishti sharma <srishtishar at gmail.com> wrote:
>>   These are the mutt configurations
>>
>>    set ssl_starttls = yes
>>    set ssl_force_tls = yes
>>    set imap_user = srishtishar at gmail.com
>>    set imap_pass = 'heuristics at 56'
>>
>>    set from = srishtishar at gmail.com
>>    set realname = 'srishti sharma'
>>    set folder = imaps://imap.gmail.com/
>>    set spoolfile = imaps://imap.gmail.com/INBOX
>>    set postponed = "imaps://imap.gmail.com/[Gmail]/Drafts"
>>
>>    set header_cache = "~/.mutt/cache/headers"
>>    set message_cachedir = "~/.mutt/cache/bodies"
>>    set certificate_file = "~/.mutt/certificates"
>>    set smtp_url = 'smtps://smtp-relay.gmail.com'
>>    set move = no
>>    set imap_keepalive = 900
>>
>>
>>
>> On Sun, Feb 5, 2017 at 7:15 AM, Ozgur Karatas <mueddib at goosey.org> wrote:
>>> 05.02.2017, 04:40, "srishti sharma" <srishtishar at gmail.com>:
>>>> I am getting the error smtp server problem name or service not known
>>>> I have tried googling it but , I haven't found anything relevant .
>>>> what could be the problem .
>>>>
>>>> regards
>>>>
>>>
>>> Hello,
>>>
>>> what is the mutt configurations? would you paste it? what did you configure as smtp settings on the mutt? Please paste it.
>>> if you don't show us the error message and the configuration, we can't help you at all.
>>>
>>> Regards
>>>
>>> ~Ozgur