A client (my brother) always send PDF invoices from Pastel via his email account hosted on a cPanel server.
About 2 months ago such PDF invoices is unreadable with I/O error but if send via other smtp server the same PDF invoice don't have any problem.
I tried to send PDF invoice from server (My own billing system) without any problem.
If his smtp is set to the cpanel server smtp (maildomain.com or IP address) then it cannot be opened but if changed to his internet connection smtp (one of our biggest cellphone companies) then it can be opened.
So far as I know NOTHING server side can cause this and my reasoning is that the document is somehow changed "en-route". (There is a few extra bits in the unable to open PDF document)
Any ideas perhaps please guys?
(I am by the way deaf and have the hosting business for almost 10 years so I am not too stupid and REALLY relay very much on email to work 100%)
About 2 months ago such PDF invoices is unreadable with I/O error but if send via other smtp server the same PDF invoice don't have any problem.
I tried to send PDF invoice from server (My own billing system) without any problem.
If his smtp is set to the cpanel server smtp (maildomain.com or IP address) then it cannot be opened but if changed to his internet connection smtp (one of our biggest cellphone companies) then it can be opened.
So far as I know NOTHING server side can cause this and my reasoning is that the document is somehow changed "en-route". (There is a few extra bits in the unable to open PDF document)
Any ideas perhaps please guys?
(I am by the way deaf and have the hosting business for almost 10 years so I am not too stupid and REALLY relay very much on email to work 100%)