Most isp block port 25. Use 465 or 587 for outgoing. 

> Il giorno 22 dic 2020, alle ore 20:26, ChandranManikandan <kand...@gmail.com> 
> ha scritto:
> 
> 
> I have checked the logs above, not showing any error.
> 
> and there is no queue.
> 
> Users are using Thunderbird email client and outlook i have select auto 
> option with 25 port is going email, but thunderbird i have changed the port 
> and certificate but not working
> 
> 
>> On Wed, Dec 23, 2020 at 12:12 PM Eric Broch <ebr...@whitehorsetc.com> wrote:
>> Did you look in the logs?
>> 
>> /var/log/qmail/submission/current
>> 
>> /var/log/qmail/send/current
>> 
>> qmailctl queue
>> 
>> /var/log/maillog
>> 
>> 
>> 
>> On 12/22/2020 8:58 PM, ChandranManikandan wrote:
>>> Hi Eric,
>>> 
>>> Thanks for the update.
>>> Yes, I have updated the first clamav conversion from 102 to 103 then I ran 
>>> yum update. It was successfully updated all the packages.
>>> 
>>> but i have one issue now, We are unable to send email, outgoing is not 
>>> working.
>>> I have tried 25,587,465 ports, none of that working.
>>> when i tried from telnet all above ports were opening.
>>> 
>>> I have usually used 587 with Starttls for outgoing.
>>> 
>>> Can you help me with anything I need to do on the server or do I need to 
>>> run tls certificate again.
>>> 
>>> letsencrypt certificate is running with an end date 21st Feb 2021.
>>> 
>>> 
>>> On Tue, Dec 22, 2020 at 10:11 PM Eric Broch <ebr...@whitehorsetc.com> wrote:
>>>> You should be okay. I do updates from the console or use 'screens' when 
>>>> using putty, so that, in case of session failure the update continues and 
>>>> doesn't stop in the middle of the update.
>>>> 
>>>>> On 12/22/2020 1:30 AM, ChandranManikandan wrote:
>>>>> Hi Friends,
>>>>> 
>>>>> My Centos 7.7 is getting 351 updates on my live server.
>>>>> Can i run yum update command to update the machine.
>>>>> 
>>>>> Anything affects the mail server if i run the yum update command.
>>>>> 
>>>>> Appreciate if anyone can advise me.
>>>>> 
>>>>> 
>>>>> -- 
>>>>> Regards,
>>>>> Manikandan.C
>>> 
>>> 
>>> -- 
>>> Regards,
>>> Manikandan.C
> 
> 
> -- 
> Regards,
> Manikandan.C
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