<div dir="ltr">Thank you Oleg,<br> Unfurtunatly I wasn't using that account as a smarthost (I have dedicated account to be used for smarthost). The blocked account is a free account.<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Apr 18, 2016 at 5:18 PM, Oleg Goldshmidt <span dir="ltr"><<a href="mailto:pub@goldshmidt.org" target="_blank">pub@goldshmidt.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">Boris shtrasman <<a href="mailto:borissh1983@gmail.com">borissh1983@gmail.com</a>> writes:<br>
<br>
> As of last night, I'm no longer able to use <a href="http://smtp.gmail.com" rel="noreferrer" target="_blank">smtp.gmail.com</a>.<br>
<br>
</span>I suspect that if you use gmail as your smarthost they impose a limit on<br>
the number of mails you can *send*. I don't remember the details, e.g.,<br>
whether it is 100/day or something like that, but I remember running<br>
into the limitation in the past. Nor do I remember if it manifested<br>
itself as a login limit, but I suppose it might since you authenticate<br>
when sending mails.<br>
<br>
If you have some cron job or monitoring system or something else that<br>
sends mails and that could have exceeded their limit (check logs?), I'd<br>
suggest you look up their documentation and/or contact their support.<br>
They'll unlock the account and will also tell you how to avoid the<br>
problem in the future. I don't recall what the solution was since I was<br>
not the one handling the issue. That was in a commercial setting,<br>
anyway.<br>
<span class="HOEnZb"><font color="#888888"><br>
--<br>
Oleg Goldshmidt | <a href="mailto:pub@goldshmidt.org">pub@goldshmidt.org</a><br>
</font></span></blockquote></div><br></div>