Sent mails are not sent

Question

Hello to all,
We encounter here a strange problem:
My daughter is trying to send mails with her homework to her english teacher.
The mail semms to be sent, it shows up in the sent folder. But it never arrives at her teacher.
I tried to lookup the problem:
Sent the same mail from the account of my daughter (@me.com) to my own (@mac) account: No go. Nothing arrived.
Then i cut the mail in different peaces: Paragraph for paragraph: No problem.
Paragraphs two by two: No problem... just one combination didn´t pass.
The two paragraphs one by one: no problem
The whole text as a pdf from pages: no problem.
Any ideas or hints?
I attach the text:
Working with France: Intercultural communication
The text is about how to work with French people. It is an interview of Christoph Barmeyer, a professor of intercultural communication, founder of Culture Bridge, a consulting-company which focuses on French-German relationships, specially concerning management.
Christoph Barmeyer's first contact with France was at the age of five, at a Club Méditérranée where he had a real culture shock. Afterwards, he returned to France at the age of 16. He went to school in Paris and had a French girlfriend, too. Today, he is fascinated by its contrasts and contradictions: he considers France at the same time modern and traditional, slow and fast. Moreover, there's a high quality of live and a special lifestyle, based on strong personal relationships. According to Barmeyer, these opposites are what makes the country so alive.
First, there are several classic images of the French. On the one hand, the lazy French red-wine drinker and cheese eater, who is just enjoying life without working. On the other hand, arrogant political leaders, elegant women, striking workers and brilliant intellectual. These stereotypes were spread by medias and writers and are now well-known by many people. That's why some managers feel superior to the French concerning economic growth and industrial production. In fact, they think that the French are unable to do correct business, what's completely wrong: France has a high economic development, competitiveness and productivity. In addition, their annual gross national product per person is more important than the German or the Britain one.
Moreover, the French business is structured by two main forces. The first one is globalization: French companies, specially the CAC 40, are very exposed to competition. Most of them have an impressive external growth, such as Danone or L'Oréal. These companies know a worldwide success. The other main force is a special education system: the grandes écoles, which educate country's leaders, who are brilliant managers with significant social networks. Usually, graduates from Paris-based grandes écoles start their careers with a few years of public service, at state administration or a ministry in Paris, before entering a multinational. But they stay civil servants, what means that they are able to return to public service at any time: this is called pantouflage. A consequence is the formation of influential networks, also called "state nobility".
In addition, French communication is different from the German one, and mainly based on esprit, humour and irony. In fact, their communication style is very implicit, and management communication is indirect. Also, they have a great esprit de synthèse, what means that they often summarize essential things, without details. Furthermore, personal contact with people they know and trust is crucial to the French, what makes internet or email communication difficult: people who are close to them are more important than people who live far away.
What's more, meetings are for exchanging information and not for taking decisions. Those are made by key players high up in hierarch, before or after meetings. Also, French managers don't like to speak foreign languages, even in important situation, because their language is very linked to their identity: speaking English is like loosing their identity for them.
Furthermore, the French hierarchy is following the example of the "pyramid of people", what means that its power distance (people accept that power is distributed unequally) is more important than in other Western countries. Actually, the basis of the French state model is the mistrust of individual interests, uncontrolled market liberalism and globalization. Therefore, the central power of the state or a company is a crucial strategic player, and this strong hierarchy causes a pronounced centralization. Besides, the top of this pyramid are leaders, representing authority which regulates the power relations, with subordinates below who must pay attention not to be crushed by the top. As a consequence, the decisions are made top-down, and must be considered by different levels of the pyramid, what takes long time to be made.
Besides, the role of management is paradoxical. Despite the clear power relations, French managers are very people-oriented and need frequent personal contact, both to exchange information and to develop relationships with the subordinates. Some of them even "take the temperature" of their team by going around in the morning, having a short talk with everybody just to know how they feel this day. German or English managers, specially women, told they would prefer working for a French boss, called patron, because he's more interested in the person, has time for a talk and considers management as something human.
Barmeyer also talks about other factors influencing the French business world. First, there is the Sythème D, which is the "art of being flexible, using few resources with a lot of results, bending rules without breaking them". The D stands for débrouiller, what means unravel or disentangle. It's a sign of intelligence, because behind every formal system is an informal network of personal contacts, which you can use whenever you need it. That's what makes French business so efficient. The other factor is l'honneur, the honour, a key value in France, which influences social and working relationship, giving a social standing with obligations and rights to everybody. According to Philippe d'Irbane, today's relations are based on the society of the Ancien Régime, including nobility, clergy, bourgeoisie and farmers. This is quite different from the Anglo-Saxon or the German horizontal system, in which mutual relationships induce the duties and rights of the persons involved.
Finally, Christoph Barmeyer gives some advice about working with France. According to him, working interculturally can be a nice experience, but you should always remain that people may work in a different way. Once you've overcome stereotypes, you can plenty appreciate and discover the new culture, but you should respect the logic of honour, build personal trust and be interested in French culture, including Art, food and history.
Personally, I agree with Christoph Barmeyer in all of the points, specially concerning implicit communication. Nevertheless, the French hierarchy is very complex, and sometimes less like the "pyramid" than in Germany. For instance, my father told me that concerning the hierarchy in the medical departments (Abteilung ?), the French system is more "horizontal" than the German one.
It is the combination of the two paragraphs marked here in bold italic that doesn´t pass.
Thanks for any help
Michael

Answer 1

Can´t send mails,too.
I try different ways to configurate it, but there is the notice (icloud offline)
HELP!!