I have a smart host with Getmail+Sendmail+Postfix+Dovecot connected with a remote server. This smart host only works for one domain. Postfix is used to send mails within this domain and for outside domains. To receive I use Getmail to receive mail through POP3S from my remote server and then forwarding with Sendmail to my local user accounts.
To receive mail automatically from outside domains, I have set a script to run 5 in 5 minutes (with crontab), to check all remote email accounts at my remote server, to get new mail through Getmail.
Now, I have received some strange behaviours from one user, who is sending mail from an outside domain, to the domain of my smarthost. Sometimes, the destination only receives part of the mail that have been sended, it seems like this server sometimes dont get all the data of mail, and the only related thing that I can see is that there are text formatation that maybe are triggering this, but is not a specific type.
In mail.log and getmail logs, there is no issue being reported, all seems fine.
This user is using Outlook.
Anyone here have saw this before?
Note: If you need any config from this server, I can provide.